M² Meter / M² Factor Measurement System

Keywords: M2 factor, beam quality, beam propergation, Laser Power/energ

Mar 15, 2021 View: 965 Data Sheet

M Factor Measurement System / M Meter Laser beam quality and its focusing capability are very important parameters of a laser and are usually characterized by M factor. To measure the M factor for a laser, it is calculated based on the difference betw

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M² Factor Measurement System / M² Meter

Laser beam quality and its focusing capability are very important parameters of a laser and are usually characterized by M² factor. To measure the M² factor for a laser, it is calculated based on the difference between the product of the beam diameter and divergence, and the ideal Gaussian beam diffraction limit. The laser beam quality M2 is as below:

M2=(PI/4*LAMDA)*d0*THETA)

Where M2 is the laser beam quality M2, PI is 3.1415927, LAMDA is laser wavelength, d 0 is beam diameter, and THETA is divergence angle.

Part number	STC-M2
Detector material	Si
Wavelength range	400-1100nm
Receiving beam diameter	20um-9mm
Testing output power range	10nW-10W（Depends on the beam diameter）

The system comes with software. After the positions are keyed in the software, the beam diameters, beam divergence angle and M2 will be calculated and given as shown as follows: