Pulse/QCW Diode Driver

Feb 12,2021
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Data Sheet

LDDP Series Pulse Diode Drivers LDDP series diode drivers are probably the most powerful diode drivers in the aesthetic world. Peak output power is up to 10kW (with user selectable IMAX and VMAX). Averaged output power is up to 1600W (assuming 100-240

STFD Series Diode Drivers

1. STFD-SF3xx Series QCW Laser Diode Drivers

(1) QCW Laser Diode Drivers with RS232

Switched mode laser power supply is designed for supplying diode arrays, which are used for pumping powerful solid or fiber lasers. Power supply is designed to the laboratory, educational, experimental and industrial applications. Additionally the power supply can be equipped with a LD thermal stabilization controller (TEC controller). Also it has current limit, duty cycle limit and safety interlocks. Could be modified by a customer's request for the optimal selection of parameters for a specific load.

	STFD-SF306	STFD-SF315	STFD-SF350
Pulse rate* (F)	1-500Hz, single pulse	1-500Hz, single pulse	1-000Hz, single pulse
Output voltage* (V)	0-140 V	0-300 V	0-300 V
Output current* (I)	1-150 А	1-300 А	1-350 А
Pulse duration* (τ)	50-1000 μs	50-1000 μs	50-1000 μs
Rise time**	<60 μs	<60 μs	<60 μs
Fall time**	<60 μs	<60 μs	<60 μs
Output current tolerance	0.3 %	0.3 %	0.3 %
Average output power* (P)	0.4 kW	1.5 kW	4.6 kW
Data display	LCD	LCD	LCD
Communication interface***	RS232	RS232	RS232
Trigger in	5 V, 10 μs	5 V, 10 μs	5 V, 10 μs
Trigger out	5 V, 10 μs	5 V, 10 μs	5 V, 10 μs
Trigger out delay	1-1100 μs	1-1100 μs	1-1100 μs
Interlock	switch contact closure	switch contact closure	switch contact closure
Power Input	single phase 220 VAC, 50Hz	single phase 220 VAC, 50Hz	three phase 220/380 VAC, 50Hz
Type of cooling	air cooling	air cooling	air / water cooling
Dimensions	44088345 mm; 2U	440132440 mm; 3U	440177485 mm; 4U
Weight	10 kg	12 kg	25 kg

* Values are limited by average power: F*V*I*τ≤P (pulse mode); V*I≤P (CW mode)
**With a length of laser diode power wire is not more than 2m

(2) STFD-SF303 & STFD-SF303M OEM Switched Mode Power Supply with RS485

Designed to power diode lasers, as well as any diode-pumped lasers.
Optimized for laboratory, educational, experimental and industrial appli-cations.
Has current limit, duty cycle limit and safety interlocks.
Can be modified according to customer requirements for optimal selec-tion of parameters for a specific load.
Optionally it can be equipped for work in a temperature -40 to + 40 degree (STFD-SF303M).

	STFD-SF303 or STFD-SF303M
Pulse rate* (F)	1-10Hz, single pulse
Accuracy of the pulse rate	0.1Hz
Output voltage* (V)	0-25 V
Accuracy of the output voltage	0.1V
Output current* (I)	1-100 А
Accuracy of the output current	0.1A
Pulse duration* (τ)	50-5000 μs
Accuracy of the pulse duration	1μs
Rise time	<50 μs
Fall time	<25 μs
Output current tolerance	0.3 %
Average output power* (P)	150W
Communication interface***	RS485 (RS232 available upon request)
Trigger in	5 V, 10 μs
Trigger out	5 V, 10 μs
Output sync pulse dwell time	1-5100 μs
Power Input	single phase 220 VAC, 50Hz
Type of cooling	air cooling
Dimensions	130x60x220mm
Weight	<1 kg

* Values are limited by average power: F*V*I*τ≤P (pulse mode); V*I≤P (CW mode)
** The difference between STFD-SF303 and STFD-SF303M is STFD-SF303 for normal use and SF303M for use at temperatures -40 to +40 degree. They both are OEM and have no display. Customer can control this from PC. For STFD-SF303(M) we can provide a control panel, but only for STFD-SF303(M) with RS485.

(3) STFD-SF305M Series OEM QCW Laser Diode Drivers

OEM switched mode laser power supply is designed for supplying diode arrays, which are used for pumping powerful solid or fiber lasers. Power supply is designed to the laboratory, educational, experimental and industrial applications. Additionally the power supply can be equipped with a LD thermal stabilization controller (TEC controller). Also it has current limit, duty cycle limit and safety interlocks. Could be modified by a customer's request for the optimal selection of parameters for a specific load.

	STFD-SF305M
Pulse rate (F)	1-100 Hz, single pulse
Accuracy of the pulse rate	0.1 Hz
Output voltage (V)	0-360 V
Accuracy of the output voltage	0.1 V
Output current (I)	1-60 А
Pulse duration (τ)	50-250μs
Accuracy of the output current	0.1 A
Accuracy of the pulse duration	1 μs
Rise time	<50 μs
Fall time	<25 μs
Output current tolerance	0.3%
Average output power* (P)	500 W
Communication interface	RS485
Trigger in	5 V, 10 μs
Trigger out	5 V, 10 μs
Trigger out delay (Output sync pulse dwell time)	1-350 μs
Power Input	single phase 220 VAC, 50Hz
Type of cooling	air cooling
Dimensions	250х175х70mm; 1U
Weight	<1 kg

2. STFD-SF4xx Series OEM CW Laser Diode Drivers

CW laser power supply for diode-pumped lasers is designed to supply diode arrays, which are used for the pumping of high-power solid-state or fiber lasers. Power supply is designed for operation in the laboratory, educational, experimental and industrial applications. Also it has current limit, duty cycle limit and safety interlocks. Could be modified by a customer's request for the optimal selection of parameters for a specific load.

	STFD-SF4xx
Output voltage* (V)	25 V
Voltage changing	1 V
Output current* (I)	40 А
Current changing	1 А
Output current tolerance	0,3 %
Average output power* (P)	500 W
Data display	Software for the PC
Communication interface	RS485
Trigger in	5 V, 10 μs
Trigger out	5 V, 10 μs
Interlock	switch contact closure
Cooling	air cooled
Power Input	single phase 220 VAC, 50Hz
Dimensions	25017070 mm; 1U
Weight	2 kg

3. STFD-SF5xx Series CW/QCW Laser Diode Drivers

Pulse / CW laser power supply for diode-pumped lasers is designed to supply diode arrays, which are used for the pumping of high-power solid-state or fiber lasers. Power supply is designed for operation in the laboratory, educational, experimental and industrial applications. Additionally the power supply can be equipped with a thermal stabilization controller (TEC controller). Also it has current limit, duty cycle limit and safety interlocks. Could be modified by a customer's request for the optimal selection of parameters for a specific load.

	STFD-SF530		STFD-SF550
	pulsed mode	CW	pulsed mode	CW
Pulse rate* (F)	1-500Hz, single mode	-	1-1000Hz, single mode	-
Output voltage* (V)	0-160 V	0-160 V	0-200 V	0-200 V
Output current* (I)	1-300 А	1-150 А	1-300 А	1-150 А
Pulse duration* (τ)	50-1000 μs	-	50-1000 μs	-
Rise time**	<60 μs	-	<60 μs	-
Fall time**	<60 μs	-	<60 μs	-
Output current tolerance	0.3 %	0.3 %	0.3 %	0.3 %
Average output power* (P)	2.5 kW	2.5 kW	4.6 kW	4.6 kW
Data display	LCD		LCD
Communication interface	RS232		RS232
Trigger in	5 V, 10 μs		5 V, 10 μs
Trigger out	5 V, 10 μs		5 V, 10 μs
Interlock	switch contact closure		switch contact closure
Cooling	air / water cooled		air / water cooled
Power Input	single phase 220 VAC, 50Hz		three phase 220/380 VAC, 50Hz
Dimensions	440132440 mm; 3U		440132485 mm; 4U
Weight	23 kg		25 kg

* Values are limited by average power: F*V*I*τ≤P (pulse mode); V*I≤P (CW mode)
**With a length of laser diode power wire is not more than 2m

4. STFD-MEPSS Multichannel Electric Power Supplied System for Diode-pumped Lasers

Laser multichannel electric power supplied system is designed for supplying high-power multi-channel lasers. The power supply system of a powerful multi-channel laser is used in special laser systems, laser technological complexes, in researches of laser-matter interaction; inertial confinement fusion; stands for the laser diodes arrays testing and etc. STFD-MEPSS can be equipped with all any supplies and charging modules. The company has experience in designing STFD-MEPSS with the number of power supplies up to 50 pieces. The potential number of units is unlimited. The STFD-MEPSS structure includes modules that provide control and synchronization of power supplies.

	STFD-MEPSS
Average output power	250 kW
Numbers of modules	2-50
Numbers of triggers	1-8
External communication interface	RS232, USB, Ethernet
Internal communication interface	RS232, FOLC
Mode	synchronous / asynchronous
Trigger type	Internal / External
Input power	310 kW max
Cooling	Air / Water cooled
Power Input	three-phase 220/380 VAC, 50 Hz

STOP Series Pulse Diode Drivers, Optical Pulse Generators & Seeders

We have unique capabilities in optical pulse generators, seeders and drivers.

Our STOP-LDa series includes pulser products with pulse-width range from pico-seconds to micro-seconds and with peak power of over 1W.

Our ANYPULSE technology (patent pending) offers programmable time-domain waveform generation with optical transmission. Our control software allows the user to program his own waveform in nano-second resolution and 11 bit amplitude resolution.

Our high-speed and high power linear laser drivers convert analog signals to optical transmission with peak laser current up to 3A. Our high-speed and high power digital laser drivers convert digital signals to optical transmission with peak laser current up to 0.5A, data rate up to 1Gb/s and handling of PRBS data patterns.

We integrate in our products the laser diode or LED that you need: cooled or uncooled, wavelength range from UV to IR, including 1064 and 1550nm. An evaluation board and accessories are offered for quick evaluation of our modules.

Product Applications

Seeders for pulsed fiber-lasers
Laser source for 3D cameras (Time-of-Flight)
Pulsers for Laser-Range-Finders and LIDARs
Transmitters for telecomm applications
Time Domain Fluorescence Microscopy

Product List

1. STOP-LDa pulser series:

The STOP-LDa pulsers include a laser pulser, TEC controller and laser diode. Peak power up to over 1W. Duty cycle limit ~ 10%. High speed or high current versions.

STOP-LDa-gs: fixed pulse-width of 50ps to 150ps – gain switching.
STOP-LDa-3: pulse-width of 0.5 to 3ns with continuous pulse-width tuning.
STOP-LDa-64: pulse-width of 1 to 64ns in 0.25ns steps and fine tuning.
STOP-LDa-128: pulse-width of 1 to 128ns in 0.5ns steps and fine tuning.
STOP-LDa-256: pulse-width of 1 to 256ns in 1ns steps and fine tuning.
STOP-LDa-1250: pulse-width of 10 to 1250ns in 5ns steps and fine tuning.
STOP-LD-H1: Peak pulse current: up to 25A / 50A, pulse-width options in range of 10ns to 1us in 5ns steps, frequency up to 10MHz.

2. Pulse Shaping (time domain) products:

STOP-AWG2500: Arbitrary Waveform Generator with time resolution of 555ps. Other resolution - per request.
STOP-LD-Lin-HC: Linear optical transmitter, peak current up to 2A (~3A nonlinear), rise/fall time ~1.5ns.
STOP-LD-Lin-HS: Linear optical transmitter, peak current up to 0.5A, rise/fall time ~0.6ns.
STOP-LD-ps: This product is a combination of the AWG2500 and the STOP-LD-Lin. It acts as an optical arbitrary waveform generator. Programmable in time resolution of 555ps.
STOP-SW-ps1: PC software with a friendly GUI for the STOP-LD-ps and for the STOP-AWG2500. Allows programming of any waveform and comprehensive control.
STOP-AMP-700: Pulse amplifier to drive MZ modulators. Complements the STOP-AWG2500 in applications where a MZ modulator is required. Peak voltage up to 5V. Tr/Tf ~ 1ns.

3. Laser driver for 3D ToF cameras

STOP-LD-D1: Digital transmitter, peak current up to 500mA, data rate up to 1Gb/s. Tr/Tf ~ 350ps. CML or ECL data input. Supports PRBS patterns. The product also suits special telecom applications.

4. Evaluation board (Test Jig) and accessories:

Test jig for standard products: Suits all STOP-LD products. Provides power control and trigger.
STOP-EXT40-2: 40 wire, 50cm long cable for connecting to all STOP-LD products in OEM applications.
SMA to MCX (male) RF cable: For monitoring the laser current in all STOP-LD products.
SMA to MCX (female) RF cable: For direct connection to AWG2500 RF outputs.

Product options:

High speed versions or high current versions.
Built in potentiometers or external controls.
Laser diodes types: BTF or coax packages, various wavelength.
OEM modules or benchtop instruments.

Details of Products

1. STOP-LDa Pulsers Series

All seeder's functions integrated in one assembly: Adjustable pulse generator; Pulse driver; Efficient TEC controller; Laser diode
Pulse-width coverage of picoseconds (gain-switching) to micro-seconds
Peak current up to 3A
Pulse width, bias, temperature and amplitde (optional) adjustments
External or on-board controls
Wide selection of laser diodes or LEDs
Monitoring for all key parameters

1.1 STOP-LDa-gs Seed Laser / Picoseconds optical Pulser / Driver

Fixed pulse width of 50ps to 150ps

The STOP-LDa-gs seed laser assembly is an integrated solution for the seed (oscillator) part of pulsed MOPA fiber laser systems. The assembly includes all the key functions needed in a high-performance seeder, including a trigger generator, an adjustable pulse-width generator, laser driver, TEC controller and an integrated laser diode.

The optical peak power can be adjusted by an on-board potentiometer. The trigger source is selectable: internal or external. In external trigger mode each incoming trigger signal (rising edge) results in a generation of a single pulse.

The optical pulse-width is controlled by an external analog control voltage. The pulse-width range is from gain-switching mode (~50ps) to over 1ns. The module has also analog control inputs for bias current and set temperature. Each of the input analog control signals can be replaced by an on-board potentiometer so that the module can either be controlled externally or have internal settings. With the bias current-control the user can impact the optical spectral width or to change the extinction ratio.

The product is designed to operate in a wide temperature range and in maintenance-free conditions – making it a good choice for OEM integration in industrial laser systems. Various product options are being offered.

Features

All seeder's functions integrated in one assembly: Adjustable pulse generator from gain-switched operation (~50ps) to 1ns; On-board trigger generator: 4K-20MHz; Efficient TEC controller; Laser diode; Designed for OEM in laser systems
Compact: 62mm x 45mm
Typical optical peak power of 0.5W
Pulse amplitude control
Tunable bias-current up to 50mA (or 200mA)
On board potentiometers or external controls
Efficient protection on the laser diode
Wide selection of laser diodes in wavelengths of 1064nm, 1550nm and more
Monitoring of all key parameters
Quick evaluation by STO’s test jig or CSW-3 controller board or a cable assembly EXT-40-2

Product Applications

Seed Laser for fiber lasers
Optical pulser for high-resolution LIDAR
Characterization of high-speed optical receivers

Parameter	Value	Comments
Pulse width range in gain-switched mode	40ps to 150ps	Depends on laser diode type
Peak power	200mW to ~1W	Depends on laser diode type
Bias current	0 to 50mA	Can be increased to 100mA upon request
Pulse frequency range	Single shot to 20MHz	Can be optimized to 20MHz ~ 80MHz
Trigger input	TTL/LVTTL	Rising edge, high impedance
Enable module controls	TTL/LVTTL	Laser enable, TEC enable
TEC driver current	In range of -2A to +2A
Laser temperature accuracy	Better than 0.1C	After stabilization
Operating temperature range	0 to 60C	Other range - upon request
Supply voltages	5V / 12V or 5V / 24V
Dimensions	62mm x 45mm
Installation options	Vertical or horizontal
Main connector	Samtec TFM-120 series	40 pin

Suitable Laser Diodes

Various laser diodes are available to be used with the STOP-LDa-gs: DFB, FP or FBG types; wavelengths of 1030nm, 1064nm, 1310nm, 1480nm, 1550nm or other custom wavelengths. Butterfly package (14 pins or 10 pins) or Coaxial package.

Ordering Information

	Power Supply	Mounting	TEC Controller	Trigger Generator	Potentio-meters	Bias* current of 0-200mA	Laser Diode
STOP-LDa-gs	5/12V (12) or 5/24V (24)	Horizontal (H) / Vertical (V)	Yes (T) / No (X)	Yes (G) / No (X)	Yes (P) / No (X)	Yes (B) No (X)	Laser diode description
Example of a product code for an STOP-LDa-gs module that operates on power supply of 12V, horizontal mounting, with TEC controller, trigger generator, no potentiometers, 200mA bias and a 1064 DFB laser diode: STOP-LDa-gs-12-H-T-G-X-B-1064DFB
STOP-LDa-gs	12 V (12)	Horizontal (H)	Yes (T)	Yes (G)	No (X)	Yes (B)	1064 DFB laser diode

* For bias current of 200mA a heat sink is required and the module length grows to 80mm.
For a comprehensive description of module's pin-out and controls please contact us.

1.2 STOP-LDa-3 Seed Laser / Optical Pulser Assembly

- Pulse width of 0.5ns to 3ns with continues pulsewidth tuning

The STOP-LDa-3 seed laser assembly is an integrated solution for the seed (oscillator) part of pulsed MOPA fiber lasers systems. The assembly includes all the key functions needed in a high performance seeder, including an adjustable pulse-width generator, laser driver, TEC controller and an integrated laser diode.

Each incoming trigger signal (rising edge) results in a generation of a single pulse. The pulse-width is adjustable in the range from 0.5ns to over 3ns. An on-board trigger generator is an optional feature. The module has analog control inputs: Pulse-width, bias current and set temperature (also optional amplitude control). Each of the input analog control signals can be replaced by an on-board potentiometer so that the module can either be controlled externally or have internal settings. With the bias current control the user can impact the optical spectral width or to change the extinction ratio.

The product is designed to operate in a wide temperature range and in maintenance-free conditions – making it a good choice for integration in commercial and industrial laser systems.

Features

All seeder's functions integrated in one assembly: Adjustable pulse generator from 0.5ns to 3ns; Pulse driver; Efficient TEC controller; Laser diode.
Designed for OEM in laser systems
Compact: 62mm x 45mm
Peak laser current of 2A / Optical peak power up to 1W
Bias current control to control optical spectrum
Efficient protection on the laser diode
On board potentiometers or external controls
Wide selection of laser diodes in wavelength of 1064nm, 1550nm and more
Monitoring of all key parameters
An evaluation board is available for quick evaluation
Cable assembly is available for connecting to customer's system

Product Applications

Seed laser forfFiber lasers
Optical pulser for LRF or LIDAR target simulators
Time domain fluorescence microscopy
3D Vision systems
Characterization of high speed optical receivers

Parameter	Value	Comments
Pulse width range	0.5ns to 3ns
Peak laser current	2A (@PW=3ns)	24V version; Can be increased upon request
Bias current	0 to 50mA	Can be increased to 100mA upon request
Peak optical power	Typical 600mW, up to 1W	Depends on laser diode
Pulse frequency range	Single shot to 20MHz	Can be optimized to 20MHz to 80MHz operation
Trigger input	TTL/LVTTL	Rising edge, high impedance
TEC driver current	In range of -2.5A to +2.5A
Laser temperature accuracy	Better than 0.1C	After stabilization
Operating temperature range	0 to 60C	Other range - upon request
Supply voltages	5V / 12V or 5V / 24V	Single 5V power option
Size	62mm x 45mm
Installation options	Vertical or horizontal
Main connector	Samtec TFM-120 series	40 pin

Suitable Laser Diodes

Various laser diodes are available to be used with the STOP-LDa-3: DFB, FP or FBG types; wavelengths of 1030nm, 1064nm, 1310nm, 1480nm, 1550nm or other custom wavelengths. Butterfly package (industrial type) or Coaxial package

	Power Supply	Mounting	TEC Controller	Trigger Generator	Potentiometers	Laser Diode
STOP-LDa-3	5/5V (5) or 5/12V (12) or 5/24V (24)	Horizontal (H) / Vertical (V)	Yes (T) / No (X)	Yes (G) / No (X)	Yes (P) / No (X)	Laser diode description
Example of a product code for an STOP-LDa-3 module that operates on power supply of 24V, vertical mounting, with TEC controller, no trigger generator, no potentiometers and a 1064 DFB laser diode: STOP-LDa-3-24-V-T-X-X-1064DFB
STOP-LDa-3	24 V (24)	Vertical (V)	Yes (T)	No (X)	No (X)	1064 DFB laser diode

1.3 STOP-LDa-64-Ins-DFB Seed Laser / Optical Pulser Instrument

The STOP-LDa-64-Ins-DFB is a flexible seeder instrument that can be used in pulsed MOPA fiber lasers systems. The instrument includes all the key functions needed in a high performance seeder, including an adjustable trigger generator, a pulse-width generator, laser driver, TEC controller and an integrated laser diode.

The instrument can be triggered by incoming trigger signal (rising edge) too. The pulse-width is adjustable in 8 bit resolution and an addition of fine tuning. Bias current of the laser can be tuned by the user to impact the optical spectral width.

The laser diode's temperature can be controlled by the user for fine wavelength control. The back side of the instrument includes interlock connector for safety and a USB connector for control by user's PC

(A windows operating system is required).

Features

A powerful and flexible nano-second seeder in a benchtop enclosure: Adjustable pulse-width generator and trigger generator; Pulse driver; TEC controller for fine wavelength tuning; Laser diode
Adjustable pulse-width 1ns to 64ns (Note 1)
Adjustable repetition rate from 2.5KHz to 25MHz and external trigger up to 40MHz
Includes a 1064nm DFB laser diode (Note 2)
Peak laser current of 2A / Optical peak power up to 800mW (Note 3)
Bias current control for superior spectral control
Graphical User Interface to control all instrument's functions
Optical output provided through an FC/APC connector
RF output to monitor laser's current

Product Applications

Seed laser for fiber lasers
Optical pulser for LRF or LIDAR target simulators
3D Vision systems

Parameter	Value	Comments
Pulse width range	STOP-LDa-64: 1ns to 64ns
Fine pulse-width tuning	At least +/-1ns	continues
Peak laser current	2A	Might change according to laser diode's selection
Bias current	0 to 50mA	Can be increased to 100mA upon request
Peak optical power	Typical 750mW	At pulse-width of 4ns to 64ns
Pulse frequency range	Single shot to 40MHz	Subjected to duty-cycle limit of 10%
Trigger input from external generator	TTL/LVTTL Frequency from single shot to 40MHz	Rising edge. Trigger pulse-width must be larger than the programmed pulse-width.
Enable driver	By key, interlock and GUI command
Laser temperature control	In range of +/-25C	At ambient temperature of 10 to 40C
Laser temperature accuracy	Better than 0.1C after stabilization
Operating temperature range	10 to 40C	Other range -upon request
Supply voltages	24V	A 24V wall adaptor is supplied with the instrument
Power consumption	6W typical, 15W maximum
Dimensions	225 x 84 x 200 (W x H x D)	millimeters

Ordering Information

For the instrument with a 1064nm DFB laser diode the order number is -STOP-LDa-64-Ins-DFB-1064

Notes: (1) Other pulse-width ranges are available too. Please contact us for details.
(2) Other laser diodes in various wavelengths are available too. Please contact us for details.
(3) Peak power up to 1.5W – using selected laser diodes.

1.4 STOP-LDa-YYY–HS Seed Laser / Optical Pulser Assembly

The STOP-LDa-yyy-HS series seed modules are integrated solutions for the seed (oscillator) part of pulsed MOPA fiber lasers systems. The modules include all the key functions needed in a high-performance seeder, including an adjustable pulse-width generator, laser driver, TEC controller and an integrated laser diode. Each incoming trigger signal (rising edge) results in a generation of a single pulse. The pulse-width is adjustable in 8 bit resolution and an addition of fine tuning. The four products in this series cover total pulse width range from 1ns to 256ns. The module also has analog control inputs: Fine pulse-width, bias current and set temperature. Each of the input analog control signals can be replaced by an on-board potentiometer so that the module can either be controlled externally or have internal settings.

The product is designed to operate in a wide temperature range and in maintenance-free conditions – making it a good choice for integration in commercial and industrial laser systems.

Features

All seeder's functions integrated in one assembly: Adjustable pulse generator 1ns to 256ns in 3 product versions; Pulse driver; Efficient TEC controller; Laser diode.
Designed for OEM in laser systems
Compact: 63mm x 50mm
HS version: Optical rise and fall times below 1ns (Tested at 20%-80% levels)
Peak laser current of 800mA
Bias current control
Efficient protection on the laser diode
On board (pots) or external controls
Wide selection of laser diodes
Monitoring of all key parameters
A controller board with GUI software is available to enable PC control.

Product Applications

Seed Laser for Fiber Lasers
Optical pulser for LRF or LIDAR target simulators
3D Vision systems

Parameter	Value	Comments
Pulse width range	STOP-LDa-64: 1ns to 64ns STOP-LDa-128: 1ns to 128ns STOP-LDa-256: 1ns to 256ns	Resolution of 0.25ns Resolution of 0.5ns Resolution of 1ns
Fine pulse-width tuning	At least +/- 1ns
Peak laser current	At least 800mA Al least 600mA	Using 16V power supply Using 12V power supply
Bias current	0 to 50mA	Can be increased to 100mA upon request
Peak optical power	Typical 400mW	Depends on laser diode
Pulse frequency range	Single shot to 10MHz	Subjected to duty-cycle and thermal limitations
Trigger input	TTL/LVTTL	Rising edge, high impedance. Trigger ulse-width must be larger than the programmed pulse-width
Enable driver	TTL/LVTTL	Laser enable, TEC enable
TEC driver current	In range of -2.5A to +2.5A
Laser temperature accuracy	Better than 0.1C after stabilization
Operating temperature range	0 to 60C	Other range - upon request
Supply voltages	5V / 12V or 5V / 16V	Single 5V power option
Dimensions	63mm x 50mm
Installation options	Vertical or horizontal
Laser diode heat-sink	Flat type or bracket

Suitable Laser Diodes

Various laser diodes are available to be used with the STOP-LDa-yyy: DFB, FP or FBG types; wavelengths of 1030nm, 1064nm, 1310nm, 1480nm, 1550nm or other custom wavelengths. Butterfly package (industrial type) or Coaxial package

	Max Pulse Width (ns)	Power Supply	Mounting	TEC Controller	Potentio-meter	Laser Diode
STOP-LDa-yyy-HS	64/128/256	5/5V (5), 5/12V (12) or 5/16V (16)	Horizontal (H) / Vertical (V)	Yes (T) / No (X)	Yes (P) / No (X)	Laser diode description
Example of a product code for an STOP-LDa-128 module that operates on power supply of 12V, horizontal mounting, with TEC controller, no potentiometers and a 1064 FBG laser diode: STOP-LDa-128-HS-12-H-T-X-1064FBG
STOP-LDa	128-HS	12 V	Horizontal	Yes	No	1064 FBG laser diode

2. Transmitter modules for LIDAR: STOP-LDb-5/10

The STOP-LDb series modules were designed for systems requiring a short optical pulse source with high peak power. The modules operate in frequencies of DC up to 5MHz. The peak current is up to 25A and the optical peak power (at 905nm) is up to 75W – depending on the selected laser diode. In order to protect the laser diode, the average optical power is limited to 0.1W. The modules operate on a single 12V power supply and a trigger input signal in LVTTL or TTL levels (rising edge).

Optical pulse-width is programmable in two ranges:

Part number STOP-LDb-5: Range of sub-nanosecond to 5ns.
Part number STOP-LDb-10: Range of 3ns to 10ns.

The peak power is programable too.

Pulse-width and peak power programming is done either by on-board potentiometers or by external analog voltage controls. A monitor signal indicates the average laser current. The module was designed to be integrated in real-life systems that operate for years.

Features

Optical transmitter for LIDAR applications
A compact and robust OEM module for variety of applications, including automotive
Peak current up to 25A and peak power up to 75W
Programmable pulse-width setting from 1ns to 10ns
Operating frequency from DC to over 5MHz*
Operates on a single 12V power supply
A built-in step up power supply
LVTTL / TTL trigger input
Selection of laser diodes in TO can, SMD package or LD chip.
Selection of wavelengths: 905nm, 1550nm or custom.
Enhanced thermal design to maximize performance
Four mounting holes to fit the module in your system and attach optics
(*) With reduced peak power

Product applications

LIDAR for Automotive
3D terrain mapping
Augmented reality
Gesture recognition
High resolution LRF

3. STOP-LD-ps Seed Laser Assembly with pulse shaping

The STOP-LD-ps series seed laser assembly is an integrated solution for the seed (oscillator) part of pulsed MOPA fiber lasers systems. The assembly includes all the key functions needed in a high performance seeder, including an arbitrary waveform generator, laser driver, TEC controller and an integrated laser diode.

The product is designed to operate in a wide temperature range and in maintenance-free conditions – making it a good choice for integration in laser systems for industrial, bio/medical and military applications.

Features

Multiple functions integrated in one unit: Arbitrary waveform generator; High bandwidth linear current driver; Efficient TEC controller; Laser diode
Our AnypulseTM technology
Flexible pulse shaping with 1ns resolution
Laser current up to 2A with 11 bit resolution
Triggering modes: Internal, external, loops
Serial interface to PC or to customer's system
PC control and intuitive GUI control
Available wavelength: 1550nm, 1064nm or custom
OEM circuit board (12cm x 7cm) or lab instrument

Benefits of pulse shaping

Comprehensive waveform control to enhance performance of pulsed fiber laser systems
Increases energy conversion efficiency in wavelength converters.
Adds flexibility to laser systems to perform a wide range of material processing tasks.

Product applications

Seed laser for Fiber Lasers
Simulator for laser-range-finders and LIDAR systems
Waveform or pulse generator for high speed electronic systems

4. Controller and GUI for STOP-LD series modules

Our Controller/GUI is compatible to all STOP-LD series modules. The product shall be used in conjunction with any of the STOP-LD modules. The product's main features are:

RS-232 connectivity and USB connectivity using a RS232-USB cable.
A single Power supply (12V or 24V). The controller provides the supply voltages to the STOP-LD module.
On board trigger generator 2.5KHz to 25MHz and supporting external trigger from DC to up to 50MHz.

The STOP-LD module with the Controller/GUI form a capable and easy to use solution with no need to deal with manual calibrations and analog control signals.

Features

The Controller/GUI matches all our STOP-LD modules (pulsers and laser drivers)
RS-232 interface (USB using a serial-USB cable)
Eliminates the need for discrete control inputs
GUI software to controls all module's functions
Single Power supply (12V or 24V)
A wide range trigger oscillator and diverse triggering features.
Save / retrieve waveform function
Safety features: Interlock/Key input and quick shut-down from the GUI
Compact: 70mm x 60mm

Product Applications

Seed laser for fiber lasers
Optical pulser for LRF or LIDAR target simulators
3D Vision systems
Pico-second to nanosecond pulsers for lab use

The GUI software controls all the functions of the STOP-LD module and displays status/monitoring data. It includes tens of pre-set values of pulse-width, frequencies, bias currents, Peak currents and LD temperatures. The GUI also allows the user to save and retrieve waveforms. A special attention was made to safety features: Interlock input, Key input and a one touch quick shut-down from the GUI.

Attaching the controller to an STOP-LD board forms one board with total dimensions of ~7X10 cm. The user may also connect the two boards by using a cable. The two boards can also be attached to form a (sandwich) having dimensions of 70mm x 60mm.

Ordering codes:

STOP-CSW-64 Controller/SW for STOP-LDa-64
STOP-CSW-256 Controller/SW for STOP-LDa-256
STOP-CSW-1250 Controller/SW for STOP-LDa-1250
STOP-CSW-3 Controller/SW for STOP-LDa-3 and STOP-LDa-gs

STJ Series QCW Laser Diode Drivers

The QCW Laser diode driver is specially designed for various QCW laser diodes at the compact size and modularization. It adopts the latest modern power electronic devices, high-speed microprocessor (MPU) program control technology, and low-power linear modulation technology (with extremely low ripple). It has excellent voltage and current output characteristics. No overshoot, no kickback, no surge and low noise when operation. It has perfect multiple protection functions, and has reliable protection for laser diode. The adjustment and control of current parameters can be selected by local and computer (setting by software). In addition, the driver also has alarm signal settings. (eg. water pressure alarm, for shutdown protection). The driver adopts 240x128 dot matrix graphic LCD or 16 bit "8" digital tube display, simple menu mode display, membrane button, and has friendly user interface and fault diagnosis function. And TEC for precision maintaining the temperature on peiltier element (TEM) is also an optional.

The QCW laser diode driver is an excellent choice for laser equipment manufactures and research institute. It can set the temperature parameters independently and you can also set the temperature on the LCD only via a serial line to connect to the laser driver.

Features:

Ideal rectangle output pulse current waveform;
The max output voltage 50V (adaptive load)
Adaptive load, real-time display of actual voltage;
0-150A (The output current is continuously adjustable), QCW output;
Pulse frequency 1-2000Hz (adjustable). The Max 5kHz (When the duty cycle =50%, need to customized);
Pulse width 20-500us (adjustable) (Need to customized if the pulse width >1000us);
Pulse duty cycle 0-25% (max) adjustable.( Need to customized if the duty cycle >25%);
Local & computer control for the pulse current;
Local & computer control for the pulse frequency;
Local & computer control for the pulse width;
Local and computer control for power on / off;
A 400million times counting ability pulse counter PC, which is used to count the output pulse (only for Y1 and Y2 models);
High speed ,rapidly adjusted the current value of each pulse one by one;
Delay synchronization signal output with 0-6000us delay and adjustment step size at 1us;
With input alarm signal (eg. water pressure alarm, for shutdown protection);
Over heat, over current protections;
High stability, high anti-interference and low noise;
240x28 dot matrix graphic LCD or 16 bit "8" digital tube display, to show setting current, actual current, voltage and power, simple menu / mode display, membrane button
User friendly interface, fault diagnosis function
With perfect PID control software, intelligent step-less temperature control on both heating and cooling, TEC laser diode driver is an good optional for better laser performance and compact size for the user.
We can customize the driver according to customer’s requirements.

Model	STJ-QCW 03100	STJ-QCW 03120	STJ-QCW 03150	STJ-QCW 06100	STJ-QCW 06120	STJ-QCW 06150	STJ-QCW 12100
Input voltage (VAC)	220±15%	220±15%	220±15%	220±15%	220±15%	220±15%	220±15%
Output voltage(V)	3V (self-adaption)	3V (self-adaption)	3V (self-adaption)	6V (self-adaption)	6V (self-adaption)	6V (self-adaption)	6V (self-adaption)
Output current(A)	0-100A	0-120A	0-150A	0-100A	0-120A	0-150	0-100A
Frequency(Hz)	1-2000	1-2000	1-2000	1-2000	1-2000	1-2000	1-2000
Pulse width(us)	20-500	20-500	20-500	20-500	20-500	20-500	20-500
Duty cycle(%)	≤25	≤25	≤25	≤25	≤25	≤25	≤25
Average output power	≤75W	≤90W	≤110W	≤150W	≤180W	≤225W	≤300W
Rise/Fall time(us)	≤20/15	≤20/15	≤20/15	≤20/15	≤20/15	≤20/15	≤20/15
Synchronous signal (us)	0-1000	0-1000	0-1000	0-1000	0-1000	0-1000	0-1000
Voltage noise (Vp-p)	≤0.1%	≤0.1%	≤0.1%	≤0.1%	≤0.1%	≤0.1%	≤0.1%
Current noise (Ap-p)	≤50mA	≤60mA	≤70mA	≤50mA	≤60mA	≤70mA	≤50mA
Stability%)	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1
Working mode(CW/QCW)	QCW	QCW	QCW	QCW	QCW	QCW	QCW
(LCD/LED)	LCD/LED	LCD/LED	LCD/LED	LCD/LED	LCD/LED	LCD/LED	LCD/LED
Working temperature ( °C)	-20~+50	-20~+50	-20~+50	-20~+50	-20~+50	-20~+50	-20~+50
Environment humidity (%)	≤90	≤90	≤90	≤90	≤90	≤90	≤90

Model	STJ-QCW 12150	STJ-QCW 24100	STJ-QCW 24150	STJ-QCW 30100	STJ-QCW 30150	STJ-QCW 50100	STJ-QCW 50150
Input voltage (VAC)	220±15%	220±15%	220±15%	220±15%	220±15%	220±15%	220±15%
Output voltage(V)	12V (self-adaption))	24V (self-adaption))	24V (self-adaption))	30V (self-adaption))	30V (self-adaption))	50V (self-adaption))	50V (self-adaption))
Output vurrent(A)	0-150A	0-100A	0-150A	0-100A	0-150A	0-100A	0-150A
Frequency(Hz)	1-1600	1-1200	1-800	1-1000	1-700	1-700	1-500
Pulse width(us)	20-500	20-500	20-500	20-500	20-500	20-500	20-500
Duty cycle(%)	≤16	≤12	≤8	≤10	≤7	≤7	≤5
Average output power	≤290W	≤290W	≤290W	≤300W	≤315W	≤350W	≤375W
Rise/fall time(us)	≤20/15	≤20/15	≤20/15	≤20/15	≤20/15	≤25/20	≤25/20
Synchronous signal (us)	0-1000	0-1000	0-1000	0-1000	0-1000	0-1000	0-1000
Voltage noise (Vp-p)	≤0.1%	≤0.1%	≤0.1%	≤0.1%	≤0.1%	≤0.1%	≤0.1%
Current noise (Ap-p)	≤70mA	≤60mA	≤70mA	≤60mA	≤70mA	≤70mA	≤50mA
Stability%)	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1
Working mode(CW/QCW)	QCW	QCW	QCW	QCW	QCW	QCW	QCW
(LCD/LED)	LCD/LED	LCD/LED	LCD/LED	LCD/LED	LCD/LED	LCD/LED	LCD/LED
Working temperature ( °C)	-20~+50	-20~+50	-20~+50	-20~+50	-20~+50	-20~+50	-20~+50
Environment humidity (%)	£90	£90	£90	£90	£90	£90	£90

Remarks:

If you need 110VAC input power supply, please inform us when ordering
We have four sizes of the drivers W×L×H＝304×295×88mm (Y1, S1);W×L×H＝425×310×88mm (Y2, S2);
Above drivers are our standard models. We can also customize according to customer’s parameters.
We can customized the driver with adjustable pre-current (It is also known as preheating current, maintaining current, base current).

STO Series Pulse Diode Drivers

1. STO-PDD Series Pulse Diode Drivers

STO-PDD series diode drivers are probably the most powerful diode drivers in the aesthetic world. Peak output power is up to 10kW (with user selectable IMAX and VMAX). Averaged output power is up to 1600W (assuming 100-240VAC input) and over 2000W on request (with 200-240VAC input).

Since the driver was especially designed for laser hair removal applications, it's fully compliant to the medical standards - IEC 60601-1 for electrical safety and IEC 60601-1-2 for electromagnetic compatibility. Besides, they are also widely used in diode pumping and direct diode laser applications.

Part no.		STO-PDD-300	STO-PDD-1600	STO-PDD-1000
Input	Power Input	100-240VAC, 50/60Hz	100-240VAC, 50/60Hz	300VDC + 24VDC/1A
Output	Max. average power	300W	1600W	100W
	Max. current, Imax	200A	200A	200A
	Max. voltage, Vmax	50V	100V	200V
	Max. peak power, Wmax	5kW	10kW	10kW
	Rise/fall time	<1ms (10% to 90% full current)	<1ms (10% to 90% full current)	<1ms (10% to 90% full current)
	Current regulation accuracy	<1% of Imax	<1% of Imax	<1% of Imax
	Current value error	<1% of Imax	<1% of Imax	<1% of Imax
	Current overshoot	<1% of Imax	<1% of Imax	<1% of Imax
	Efficiency	>80%	>80%	>80%
Environment	Operating temp.	0-+40oC	0-+40oC	0-+40oC
	Storage temp.	-20-+60 oC	-20-+60 oC	-20-+60 oC
	Humidity	90%, non-condensing	90%, non-condensing	90%, non-condensing
Interface	Connector	15Pin D-sub female	15Pin D-sub female	10 pin Molex C-Grid connector
	Current program	Analog, 0-10V	Analog, 0-10V	Analog, 0-10V
Others	Size (LxWxH)	296x213x70mm	230x223x133mm	255x172x82mm
	Weight	2.5kg	5kg	2.2kg

2. STO-PDD-3U Pulsed Diode Driver

STO-PDD-3U is a pulsed diode driver especially designed for diode pumping of Nd:YAG and similar solid-state lasers. It is quite a high power solution. Maximal output power is up to 500W. Maximal output current (IMAX) and maximal compliance voltage (VMAX) achieve 400A and 400V respectively although not at the same time (with peak power limited with 20kW). A number of models with different IMAX and VMAX is available.

APPLICATIONS

Pumping of pulsed DPSS lasers (Nd:YAG, diodes and similar)

FEATURES

100-240VAC input
Output current up to 400A
Output voltage up to 400V
Output power up to 20kW (peak)
Output power up to 500W (average)
Fast rise and fall times
Multiple outputs and other options

INTERFACES

User interface is 7-inch full color display on front panel. Base machine interface is RS-485. The following user and machine interfaces are available as alternatives:

RS-232 machine interface
Remote control (see picture below)
No front panel UI (low cost modification for embedded applications)

WATER COOLING (OPTION)

STO-PDD-3U can be supplied in two modifications different with cooling method. The default option is a forced air cooling with embedded fans. Since, due to high heat dissipation at maximal output power, the noise produced by fans might seem to be undesirable high, we offer an alternative of water cooling.

Input
Voltage	100-240VAC, 50/60Hz
Current	10A max
Laser diode output
Regime of operations	Pulsed
Maximal output current (IMAX)	200A (in base modification, other on request)
Maximal output voltage (VMAX)	100V (in base modification, other on request)
Maximal output power (peak, IMAX * VMAX)	20kW
Risetime/falltime	10us-40us (load and output current dependent)
Pulse width (t)	50us-300us (in base modification, other on request)
Pulse repetition rate (f)	1Hz-100Hz (in base modification, other on request)
Maximal output power (average, IMAX * VMAX * f * t)	500W
Current overshoot	<5% of IMAX
Current accuracy/stability	<1% of IMAX
Protections	Protective crowbar at the output; From overcurrent, adjustable current limit; From overvoltage From too long pulses; From too high repetition rate; From too high average power; Interlock; From overheating
Options
User interfaces (UI)	7’’ color display with touch panel or no display / Remote control
Machine interfaces	RS-485 or RS-232
Multiple outputs	+
Embedded TECs	+
Pockels cell driver control	+
Cooling methods	Forced air cooling with embedded fans (relatively noisy at high output power) / Water cooling (more silent)
Low cost option	+ (difference in simpler coverage only)
Environmental
Operating temperature	+15…+35, non-condensing
Storage temperature	-20…+60C
Mechanical
Dimensions	19-inch rack, 3U height, approx. 40cm depth
Weight	Up to 10kg (modification dependent)

Most of the parameters can be tailored to the customer’s requirements. Feel free to contact us if your needs are different from the specifications above.

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