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M²
Factor Measurement——M²-Meter |
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Beam
quality and it's focusing capability are very important
parameters of laser, are usually characterized by M² factor. To
measure the M² factor for a laser, it is testing the difference
between the product of the beam diameter and divergence, and the
ideal gaussian beam diffraction limit. Through derivation the
computation formula is as below: |
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M²-Meter Testing Instrument:
M²-Meter |
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Detector
material |
Si |
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Wavelength
range |
400-1100nm |
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Receiving
beam diameter |
20um-9mm |
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Testing
output power range |
10nW-10W（Depends on the beam diameter） |
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Example
of the Testing Result |
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