Acouosto-optic Tunable Filters

Acouosto-optic Tunable Filters

Tunable Filters An acousto-optic tunable filter (AOTF) is a solid-state, electronically-addressable random-access optical pass-band filter. It may be used to rapidly and dynamically select a specific wavelength from a broadband or multi-line source.

STY Series AO Tunable Filters

1. STY-AOTF-PRO AO Tunable Filter

STY-AOTF-PRO is the latest plug and play wavelength selection module based on the Acousto-Optic Crystal. It has the two output: broadband supercontinuum output (useful for broadband scattering, reflection and transmission spectroscopy) and single line tunable output (useful for replacing multiple laser lines). Moreover the single line tunable output covers 430-1450nm range in one output beam, offering great flexibility for spectroscopy, microscopy and nanophotonics application.

tunable filter

Features:

  • Switchable SC output and tunable output
  • 430-1450nm range in one beam
  • Linear polarized output
  • Up to 8 simultaneous channel
  • Easy plug & play

Applications:

  • High resolution microscopy
  • Fluorescence microscopy & spectroscopy
  • Nanophotonics
  • Replace of several single wavelength laser
  • Material characterization

Specifications:

  • Outputs: Output 1: Broadband SC Output; Output 2: Single Line Tunable Output
  • Single Line Tunable Range: 430-1450nm
  • Filter Bandwidth: 2-10nm
  • AOTF Diffraction Efficiency: >90%
  • Output Efficiency: >40%
  • Polarization: Linear

2. STY-AOTF Acousto-Optic Tunable Filter System

STY-AOTF system is a simply plug and play module with any of our STYS series supercontinuum system. For each integrated AOTF crystal, the system enables up to 8 simultaneous tunable wavelength channels. Combines of three different crystals, the AOTF module covers the entire supercontinuum spectrum from 400nm to 2400nm. The AOTF module can be equipped with either one or two of the AOTF crystal, according to customers’ demand. The AOTF offers a free-space collimated beam as standard optical output. As an alternative, a single-mode fiber delivered output is also available.

tunable filter

Features:

  • 400-2400nm filter range
  • Simultaneous 8 channels output
  • Linear polarized output
  • Easy plug & play
  • User friendly GUI

Applications:

  • High resolution microscopy
  • Fluorescence microscopy
  • Nanophotonics
  • Replace for several single wavelength laser
  • Material characterization
AOTF Crystals VIS NIR IR
Wavelength Range 400nm~650nm 650nm~1100nm 1100~2000nm
Filter Bandwidth 2nm~7nm 2nm~6nm 4~16nm
AOTF Diffraction Efficiency >90%
Output Efficiency >40%
Polarization Linearly Polarized

3. STY-VLF Variable Linear Filter System

Our VLF wavelength selection system is based on the linear variable filter technology, offering tunable wavelength from 400nm to 840nm. Moreover, the linewidth could be varied from 10-300nm, making it an ideal solution for fluorescence microscopy, nanophotonics and other application areas. The standard output of the VLF is a free-space collimated beam, as an option, the output can also be single mode fiber with FC connector.

tunable filter

Features:

  • Wavelength range: 400-840nm
  • Linewidth range: 10-300nm
  • Optional single mode fiber output

Applications:FLIM

  • Nanophotonics
  • Photocurrent microscopy

Specifications:

  • Central wavelength range: 400nm~840nm
  • Channel Spectral Bandwidth: 10nm~>300nm
  • Transmission Efficiency: >80%
  • Input Plug & Play to our Collimator
  • Output: Free-space collimated or fiber delivery
  • Fiber Coupling Efficiency: >30%
  • Polarization: Random polarized

4. STY-VLF-M Motorized Variable Linear Filter System

Our STY-VLF-M motorized wavelength selection system is based on the linear variable filter technology, offering tunable wavelength from 400nm to 840nm via computer. Moreover, the linewidth could be varied from 10-300nm, making it an ideal solution for fluorescence microscopy, nanophotonics and other application areas. The standard output of the VLF is a free-space collimated beam, as an option, the output can also be single mode fiber with FC connector.

tunable filter

Features:

  • Wavelength range: 400-840nm
  • Linewidth range: 10-300nm
  • Optional single mode fiber output
  • Motorized

Applications:

  • FLIM
  • Nanophotonics
  • Photocurrent microscopy
  • Flow cytometer

Specifications:

  • Part number: STY-VLF-M
  • Central wavelength range: 400nm~840nm
  • Channel Spectral Bandwidth: 10nm~>300nm
  • Transmission Efficiency: >80%
  • Input Plug & Play to our Collimator
  • Output: Free-space collimated or fiber delivery
  • Fiber Coupling Efficiency: >30%
  • Polarization: Random polarized
  • Control: USB
  • Dimension: 18cmx13cmx6cm

The above STY series acousto-optical tunable filters are used with our STYS series supercomtinnum lasers.

supercontinuum lasers

STG Series Acousto-optic Tunable Filters

An acousto-optic tunable filter (AOTF) is a solid-state, electronically-addressable random-access optical pass-band filter. It may be used to rapidly and dynamically select a specific wavelength from a broadband or multi-line source. When specific matching conditions between the acoustic and optical beams are met, diffraction will occur. As a result it is possible to electronically control key filter parameters such as wavelength, modulation-depth and even bandwidth, thus providing rapid (typically μs), dynamic, random access optical filtering.

Resolution bandwidths down to<0.1% are available with exceptional performance and with aperture sizes up to 25 mm and beyond. We have developed and patented techniques to allow us to offer options such as large-aperture imaging filtering, sideband suppression, and transmission of multiple discrete wavelengths.

We offer a range of AOTFs to suit a variety of applications. For scanning an entire image in wavelength at speeds sufficient for real-time video rate spectral imaging, high optical throughput is required. For this purpose devices with large aperture and/or field of view are recommended.

Our standard models are below:

Model Wavelength Active Aperture Resolution
AOTF 2837-31 351-430 nm 2.5 mm 1.0 nm
AOTF 3151-01 400-650nm 2.5 mm 2.5 nm
TF525-250-6-3-GH19A 400-650 nm 3 mm 5 nm
TF525-250-4-6-GH57A 400-700 nm 6 mm 4 nm
TF550-300-4-6-GH57A 400-700 nm 6 mm 4 nm
TF560-280-1-5-NT2 420-700 nm 5 mm 0.3 nm
AOTF 2838-01 450-670 nm 2.5 mm 1.3 nm
AOTF 2885-02 450-670 nm 2.5 mm 2 nm
AOTF 2885-04 450-670 nm 2.5 mm 4 nm
TF625-350-2-11-BR1A 450-800 nm 11 mm 1.5 nm
TF850-500-1-3-PF3 600-1100 nm 3 mm 1.5 nm
TF850-500-10-6-GH58A 600-1100 nm 6 mm 10 nm
AOTF 2986-01 640-1100 nm 2.5 mm 5 nm
TF925-550-10-3-GH29A 650-1200 nm 3 mm 9 nm
TF950-500-1-2-GH96 700-1200 nm 2 mm 0.6 nm
TF950-500-0.3-3-GH98 700-1200 nm 3 mm 0.3 nm
TF950-500-1-5-NT2 700-1200 nm 5 mm 0.8 nm
TF1300-800-16-11-NO1A 900-1700 nm 11 mm 16 nm
TF2270-2560-5-5-GH65 990-3550 nm 5 mm 5 nm
AOTF 2996-01 1100-2000 nm 2.5 mm 12 nm
TF1650-1100-2-3-GH40 1100-2200 nm 3 mm 1.6 nm
TF1650-1100-9-3-GH30A 1100-2200 nm 3 mm 8 nm
I-TF1650-1100-1-3-GH107 1100-2200 nm 3 mm 1.0nm
TF1875-1250-10-6-GH59A 1250-2500 nm 6 mm 10 nm
TF1900-1100-6-11-GH54A 1300-2500 nm 11 mm 6 nm
TF1900-1100-6-25-GH87A 1350-2450 nm 25 mm 6 nm
TF2000-1000-2-6-GH78 1500-2500 nm 6 mm 1.2 nm
TF2250-1500-12-7-GH61A 1500-3000 nm 7 mm 12 nm
TF2250-1500-2-3-GH107 1500-3000 nm 3mm 2 nm
TF2900-2200-5-3-GH40 1800-4000 nm 3 mm 5 nm
TF3000-2000-3-7-GH78 2000-4000 nm 7 mm 2.6 nm
TF3250-2500-3-3-GH107 2000-4500 nm 3mm 3 nm
TF3300-2200-xxx 2200-4400 nm Up to 15 mm Varies

STBR Series Free Space Tunable Filters

The STBR series Dynamic Tunable Bandpass Filter adjusts the center wavelength of a narrow band of light over a 100 - 200nm range. It offers very high resolution of ~1.5nm and either single or simultaneous multiple wavelength selection. It is able to precisely and rapidly adjust the wavelength and intensity of the diffracted/filtered light by varying the frequency (see graph) and RF power. We offer both free-space and fiber-coupled configurations. AOTFs are used widely in numerous optical systems and applications, especially in industrial or process control near-infrared (NIR) spectroscopy applications.

Model # Spectral Range (nm) Drive RF Frequency (MHz)
Optical Aperture (mm) Spectral Resolution (nm) Acceptance Angle (deg.) DE (%)
STBR-QZAF-.20-.40 200-400 90-250 2.0 x 10.0 1.2-7.0 4.4-7.2 20-30
STBR-TEAF_-.36-.52_ 360-520 100-190



5.0 x 5.0

Available Standard Optical Apertures includes:

3.0x3.0
5.0x5.0
7.0x7.0
10.0x10.0

Other optical apertures are available upon request.
S H S H 70
0.8-4.0 0.5-2.2 4.18-4.36 2.85-3.4
STBR-TEAF_-.40-.65_ 400-650 220-110 1.0-5.1 0.5-2.5 4.8-6.2 3.4-4.4 70-90
STBR-TEAF_-.45-.70_ 450-700 180-100 1.7-6.2 0.8-3.2 5.2-6.5 3.6-5.0 70-90
STBR-TEAF_-.55-1.0_ 550-1000 155-70 1.5-8.3 0.9-5.0 4.3-5.9 3.2-4.5 70-90
STBR-TEAF_-.40-1.0-2CH* 400-1000 220-70 1.2-8.3 0.7-5.0 3.8-5.9 2.8-4.6 50-60
STBR-TEAF_-.80-1.6_ 800-1600 130-60 S H EH S H 70-90
4-10 3-8 2-6 5.39-5.71 4.96-7.2
STBR-TEAF_-1.2-2.0_ 1200-2000 90-50 6-16 6-12 4-9 6.78-8.56 5.3-7.5 25-35
STBR-TEAF_-1.5-3.0_ 1500-3000 68-34 9-37 8-29 6-22 7.4-9.26 6.6-7.95 30
STBR-TEAF_-2.4-4.5_ 2400-4500 40-20 25-83 18-65 14-48 8.43-11.38 7.3-9.72 40
STBR-TEAF_-0.8-1.6-UH 800-1600 190-90 S H S H 60
2-6 2.0-4.5 9.9-15.2 8.65-13.3
STBR-TEAF_-1.2-1.7-UH 1200-1700 120-80 5-7 3.0-5.0 11.9-14.68 9.47-12.88 50
STBR-TEAF_-1.5-2.4-UH 1500-2400 90-55 6-14 4.5-11.0 13.4-16.95 11.9-15.2 40
STBR-TEAF_-2.4-3.2-UH 2400-3200 55-40 14-25 11.0-17.0 16.95-19.8 15.2-17.29 35
STBR- TEAF_-3.2-4.5-UH 3200-4500 45-30 24-48 17.5-37.0 19.8-23.44 17.29-20.9 30

* Available in low or standard resolution.

A crystal of Tellurium Dioxide (TeO2) AOTF that operates in the NIR region in a so-called non-collinear configuration - the acoustic and optical waves propagate at quite different angles through the crystal.

Material: TE – Tellerium Dioxide (350-5000 nm) and QZ – Quartz (SiO2)

Options:

  • S – Standard Resolution
  • H – High Resolution
  • EX – Extra high Resolution
  • UH – Ultra high Resolution

STBR series fiber coupled tunable filters

The STBR dynamic tunable bandpass filters are commonly used to dynamically select among different wavelength channels at the receiver end of dense WDM transmission systems. Other applications include tuning the center wavelength of broadband sources (such as white light sources or LEDs) in laboratory test and measurement systems. A typical band-pass shape of the selected light by AOTF filter is shown in the diagram above on the right.

Model # Wavelength Range (nm) Spectral Resolution (MHz) RF Frequency (MHz)
Insertion Loss (dB)
STBR-TEAF-0.40-0.60-2FP 400-600 1-5 59-100 3-5
STBR-TEAF-0.45-0.7-S-2FP 450-700 3-9 100-180 3-5
STBR-TEAF-0.9-1.2-UH-2FP 900-1200 1 130-160 4-5
STBR-TEAF-1.2-1.7-UH/EH-2FP 1200-1700 1.0-2.5 80-120 ~5
STBR-TEAF-1.5-1.65-UH/EH-2FP 1500-1650 1.5-2.5 80-100 ~5
STBR-TEAF-1.1-2.1-S-2FP 1100-2100 4.0-15.0 50-100 5-7

Fiber Type:

  • Single-Mode (SM) fiber
  • Single-Mode Polarization Maintaining (SM/PM) fiber
  • Multimode (MM) fiber
  • Other fiber types are available on request.

Fiber Connectors:

  • FC, SC, LC, SMA, etc.
  • Other fiber connectors are available on request

Options:

  • S – Standard Resolution
  • H – High Resolution
  • EH – Extra-high Resolution
  • UH – Ultra-high Resolution
  • Other wavelengths are available upon request.

RF Drivers for STBR Series (free space or fiber coupled) tunable filter:

Model STBR-VFI-XX-YY-SPS-A-C3 STBR-VFI-XX-YY-SPF-A-C3
Frequency range XX MHz ( matching the tunable filter requirements)
Frequency Step Size 4 Hz 10 Hz
Frequency Stability 0.010% (100PPM); +15oC to +75oC 0.015% ; +15oC to +75oC
Frequency Switching Speed 15ms typ. (from fmin to fmax) 8ns
Minimum Duration of Each step N/A 32ns for sweeping mode
1ms for hopping mode (for<300 hops)
15ms for hopping mode (>300 hops)
Power output Optimised for max performance of the tunable filter device
Power control N/A 12 bit attenuator with 25dB range (min.)
Modulation None (TTL or Analog optional)
Enclosure The unit will be packaged in a 190 mm (7.5 inch) wide by 90 mm (3.5 inch) high by 220 mm (8.75 inch) deep instrument case. The rear panel heat sink increases the depth to 270 mm (10.5 inches) maximum. The size is exclusive of connectors. A detachable AC line cord and RF cable are provided.
Environmental Nominal Laboratory conditions: The maximum ambient temperature is +35° C. The unit is not sealed against moisture or condensing humidity.
Output Impedance 50 ohms
Output Connectors SMA jack on front panel

Old Models of Tunable Filters

Over a number of years we have maintained an ambitious development program which we believe has enabled us to enhance the general performance and increase the capabilities of AOTF technology. Our product range includes purpose designed solutions for illumination / excitation wavelength selection and multispectral / hyperspectral imaging, for which we also offer the latest DFS driver technology.

Typical applications include; Biomedical (confocal microscopy & hyperspectral imaging), Scientific (spectroscopy) and industrial (process control).

Following is the list of our old models for your reference. Please contact us for updated information.

Model Description Driver
48032-4-3.5 TeO2, 1.8-5um wavelength, aperture 4mm, deflection 2.7o, RF 5W 64020-200-5ADSDFS-A
64020-200-5ADMDFS-A
48055-2-1.7 TeO2, 1.2-2.2um wavelength, aperture 2mm, deflection 2.71o, RF 1.5W 64020-200-2ADSDFS-A
64020-200-2ADMDFS-A
48058-1-.55 TeO2, 442-676nm wavelength, aperture 1mm, deflection 1.4o, RF 0.8W Eight Channel:
64048-80-.1-8CH-16
64048-80-.1-8CH-16M
Four Channel:
64048-80-.1-4CH-5
64048-80-.1-4CH-5M
48058-1-.55-WP TeO2, 442-676nm wavelength, aperture 1mm, deflection 1.4o, RF 0.8W Eight Channel:
64048-80-.1-8CH-16
64048-80-.1-8CH-16M
Four Channel:
64048-80-.1-4CH-5
64048-80-.1-4CH-5M
48058-2.5-.55 TeO2, 442-676nm wavelength, aperture 2.5mm, deflection 1.4o, RF 0.8W Eight Channel:
64048-80-.1-8CH-16
64048-80-.1-8CH-16M
Four Channel:
64048-80-.1-4CH-5
64048-80-.1-4CH-5M
48058-2.5-.55-WP TeO2, 442-676nm wavelength, aperture 2.5mm, deflection 1.4o, RF 0.8W Eight Channel:
64048-80-.1-8CH-16
64048-80-.1-8CH-16M
Four Channel:
64048-80-.1-4CH-5
64048-80-.1-4CH-5M
48058-5-.55 TeO2, 442-676nm wavelength, aperture 5mm, deflection 1.4o, RF 0.8W Eight Channel:
64048-80-.1-8CH-16
64048-80-.1-8CH-16M
Four Channel:
64048-80-.1-4CH-5
64048-80-.1-4CH-5M
48060-8-4-1.0-COL TeO2, 800-1200nm wavelength, aperture 8x2mm, deflection 23mrad, RF<100mW
48062-1-.55 TeO2, 442-676nm wavelength, aperture 1mm, deflection 1.3o, RF 0.8W Eight Channel:
64040-75-.1-8CH-16B
64040-75-.1-8CH-16MB
Four Channel:
64040-75-.1-4CH-5
64040-75-.1-4CH-5M
48062-1-.55-WP TeO2, 442-676nm wavelength, aperture 1mm, deflection 1.3o, RF 0.8W Eight Channel:
64040-75-.1-8CH-16B
64040-75-.1-8CH-16MB
Four Channel:
64040-75-.1-4CH-5
64040-75-.1-4CH-5M
48062-2.5-.55 TeO2, 442-676nm wavelength, aperture 2.5mm, deflection 1.3o, RF 0.8W Eight Channel:
64040-75-.1-8CH-16B
64040-75-.1-8CH-16MB
Four Channel:
64040-75-.1-4CH-5
64040-75-.1-4CH-5M
48062-2.5-.55-WP TeO2, 442-676nm wavelength, aperture 2.5mm, deflection 1.3o, RF 0.8W Eight Channel:
64040-75-.1-8CH-16B
64040-75-.1-8CH-16MB
Four Channel:
64040-75-.1-4CH-5
64040-75-.1-4CH-5M
48062-4.5-.55 TeO2, 442-676nm wavelength, aperture 4.5mm, deflection 1.3o, RF 0.8W Eight Channel:
64040-75-.1-8CH-16B
64040-75-.1-8CH-16MB
Four Channel:
64040-75-.1-4CH-5
64040-75-.1-4CH-5M
48062-4.5-.55-WP TeO2, 442-676nm wavelength, aperture 4.5mm, deflection 1.3o, RF 0.8W Eight Channel:
64040-75-.1-8CH-16B
64040-75-.1-8CH-16MB
Four Channel:
64040-75-.1-4CH-5
64040-75-.1-4CH-5M
TF515-230-4-5-VU1 TeO2, 400-630nm wavelngth, aperture 5x5mm, beam separation 4 o, RF 2W
TF525-250-6-3-GH19 TeO2, 400-600nm wavelngth, aperture 3mm, beam separation 3 o
TF525-250-6-6-GH57A TeO2, 400-650nm wavelngth, aperture 6mm, beam separation 3 o 64020-200-2ADMDFS-A
64020-200-2ADSDFS-A
TF527-245-6-3-GH18 TeO2, 405-650nm wavelngth, aperture 3mm, beam separation 3 o
TF527-245-6-3-GH19 TeO2, 405-650nm wavelngth, aperture 3mm, beam separation 3 o
TF600-300-6-3-GH19 TeO2, 450-750nm wavelngth, aperture 3mm, beam separation 3 o
TF640-325-2-12
TeO2, 475-800nm wavelngth, aperture 12x12mm, RF 2W
TF800-400-20-5-VU2 TeO2, 600-1100nm wavelngth, aperture 6mm, RF ~2W
TF850-500-8-6-GH58A TeO2, 475-800nm wavelngth, aperture 12x12mm, RF<1.5W 64020-200-2ADMDFS-A
64020-200-2ADSDFS-A
TF1450-500-2-F2S-SU6 TeO2, 1.2-1.7um wavelngth, aperture 12x12mm, RF 2W
TF1650-1100-9-3-GH30A TeO2, 1.1-2.2um wavelngth, aperture 3mm, RF 2.5W
Model 48055-2-1.7 48058-5-.55
Interactive Material TeO2 TeO2
Acoustic Mode Shear wave Shear wave
Operating Wavelength 1.2-2.2um 442-676nm
Operating Frequency 40-70MHz 50-85MHz
Window Configuration AR Coated AR Coated
Static Transmission >95% >95%
Diffraction Efficiency >80% @ 1.2um, >70% @ 2.2um >80% per wavelength
Input Polarization Linear, perpendicular to acoustic propagation Linear, Vertical
(Perpendicular to acoustic propagation)
Input Beam Divergence 6 Deg @ 1.2 um Solid Angle
7 Deg @ 1.7 um
8 Deg @ 2.2 um

<30 mrad (solid angle)
Acoustic Aperture size < 2 mm <5mm
Resolution 6 nm @ 1.2 um
10 nm @ 1.7 um
17 nm @ 2.2 um
3nm @ 476 nm
7.5nm @ 676 nm
Deflection angle with respect to incident beam 2.71° 1.4 degrees (wavelength insensitive)
RF Drive Power 1.5 watts 0.8 watt maximum
Impedance 50 ohms nominal 50 ohms nominal
VSWR < 3:1 over bandwidth < 2:1 over bandwidth
Package 53B02965 53B1827
Driver 64020-200-2ADSDFS-A
64020-200-2ADMDFS-A
64048-80-.1-8CH-16(8 channel)
64048-80-.1-8CH-16M(8 channel)
64048-80-.1-4CH-5(4 channel)
64048-80-.1-4CH-5M(4 channel)
Model 48060-8/4-1.0-COL TF1450-500-3-F2x
Interactive Material TeO2 TeO2
Acoustic Mode Shear wave Anisotropic, slow shear
Operating Wavelength 800-1200nm 1.2μm to 1.7μm
Operating Frequency 55-85MHz 60 to 85MHz
Window Configuration AR Coated AR coated
Static Transmission >95%
Diffraction Efficiency >85% with linear polarized
light perpendicular to acoustic
propagation
Insertion Loss:
< 3.0dB (for linearly polarised light)
< 6.0dB (for unpolarised light)
Acoustic Aperture Size 8mm x 2 mm
Resolution <1nm (best effort) 3nm at 1300nm, 4.5nm at 1550nm
Acceptance Angle(solid) >0.75mrad
Deflection angle with respect to incident beam 23mrad nominal
RF Drive Power <100mW 2W
Impedance 50 ohms nominal
VSWR < 1.5:1 over bandwidth
Package 53B00337
Fiber Type Single mode(2m), or Polarisation maintaining(multimode)
Fiber Connectors FC / PC Seiko-Geiken(SMF), or Pig-tails for splicing, FC/APC(PMF)
Model TF515-230-4-5-VU1 TF525-250-6-6-GH57A
Interactive Material TeO2 TeO2
Acoustic Mode Shear wave Anisotropic
Operating Wavelength 400-630nm 400 - 650nm
Operating Frequency 67-134MHz 58 – 116MHz
Input Polarization Linear, parallel to base Linear, vertical with respect to base
Field of view ≥6° ± 2°
Spectral Resolution <4nm @ 500nm < 6nm at 525nm
Diffraction Efficiency >90% > 90% (95% typical)
Beam Separation ≥4° > 3º
RF Drive Power Wavelength dependent ~2W < 200mW / channel
Input Impedance 50 ohms 50 ohms
Acoustic Aperture 5mm x 5mm 6mm
Clear Aperture 6mm x 8mm
Temperature 0°C<T <40°C Conduction through base
Optical Surfaces Output surface compensated for maximum pointing-stability of diffracted beam AR coated
Model TF527-245-6-3-GH18 TF527-245-6-3-GH18
Interactive Material TeO2 TeO2
Acoustic Mode Anisotropic Anisotropic
Operating Wavelength 405-650nm 405-650nm
Operating Frequency 60-120MHz 60-120MHz
Input Polarization Linear – Vertical with to base Linear – Vertical with to base
Spectral Resolution < 6nm @ 525nm < 6nm @ 525nm
Beam Separation ≥3° ≥3°
RF Drive Power 2W (16 Channels) 2W (16 Channels)
Input Impedance 50 ohms 50 ohms
Active Aperture 3 mm 3 mm
Polarisation of diffracted order Linear – Orthogonal to input Linear – Orthogonal to input
Pointing-Stability of diffracted order < ±0·01º < ±0·01º
Cooling TEC active cooling Conduction through housing base
Model TF640-325-2-12 TF527-245-6-3-GH18
Interactive Material TeO2 TeO2
Operating Wavelength 475-800nm 600nm - 1μm
Operating Frequency 65-130MHz 42 - 80MHz
Input Polarization Linear – Vertical with to base Linear: Parallel to base
Polarization of diffracted order Linear – Orthogonal to input
Spectral Resolution < 2nm @ 650nm < 10nm at 800nm
Diffraction Efficiency >90% > 90%
Field of View >1.4% ≥6º
Active Aperture 12 x12 mm 5 x 5mm
Clear Aperture 13 x13 mm 6 x 8mm
Optical Surfaces Output face compensated for optimum pointing-stability of diffracted beam Output face compensated for maximum pointing-stability of diffracted beam
RF Drive Power 2W Wavelength dependent ~2W Max
Model TF850-500-8-6-GH58A TF1650-1100-9-3-GH30A
Interactive Material TeO2 TeO2 (Anisotropic)
Operating Wavelength 600 - 1100nm 1100nm - 2200nm
Operating Frequency 49 – 98MHz 45 to 95MHz
Spectral Resolution ~ 8nm at 850nm 3nm at 1300nm, 4.5nm at 1550nm
Active Aperture 6 mm 3mm
Input Polarization Linear, vertical with respect to base Linear – Vertical wrt to base
Polarization of diffracted order Linear, orthogonal to input (90º rotated) Linear – Orthogonal to input
Pointing stability of diffracted order < ± 0.01° typical < ±0·01º
Field of View ≥2º
Beam Separation ≥4º > 6º
Transmission >95%
Diffraction Efficiency >90%
RF Impedance 50 ohms 50Ω
RF Drive Power <1.5W 2W
Cooling Conduction through base Conduction through base