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M2 Measurement

Mira-Optima-900-F-Data-Sheet.pdf

Mira-Optima-900-F-Data-Sheet.pdf

…pulse duration. 6 Measured rms in a 10 Hz to 20 MHz bandwidth. 7 Power drift in any two-hour period after warm-up when crystal's cooling water is maintained at ±0.1°C. 8 1/e2 diameter (±0.2 mm) at exit port. 9 Full angle divergence (±0.3 mrad) at exit port. 10 Typical measured M2 value is 1.1 0.0…

COHR RLScatalog2020 interactive.pdf

COHR RLScatalog2020 interactive.pdf


5 Measured rms in a 10 Hz to 20 MHz bandwidth.
6 Power drift in any two-hour period after warm-up when crystal's cooling water is maintained at ±0.1°C.
7 1/e2 diameter (±0.2 mm) at exit port.
8 Full angle divergence (±0.3 mrad) at exit port.
9 Typical measured M2 value is…

COHR WhitePaper template 2 08 2019

COHR WhitePaper template 2 08 2019

…quality measurement is the value. The value is a
normalization of the BPP value. The normalization is made against a diffraction limited beam at
a specific wavelength.
= BPP / BPP0
BPP0
= /
is dimensionless.
BPP0
= diffraction limited beam

Microsoft Word - Understanding Laser Beam Parameters Leads to Better System Performance and Can Save Money Final.doc

Microsoft Word - Understanding Laser Beam Parameters Leads to Better System Performance and Can Save Money Final.doc

…used for accurate divergence measurement.
Beam Quality Factor (Beam Parameter Product):
The beam quality factor is derived from the uncertainty principle. The factor is shown to describe the propagation of
an arbitrary beam. is a measureable quantity in order to characterize…

2011-Diode-Laser-Modules-and-Pattern-Generators-Catalog.pdf

2011-Diode-Laser-Modules-and-Pattern-Generators-Catalog.pdf

…Specifications are valid for 100% power.
Recommended power range is 70% to 100% power.
3 M2 and Beam Asymmetry measured with ModeMaster with 90/10 clip levels.
4 Polarization measurement is max./min. power with polarizer at 32 in. from laser with LM-2 power head at 37 in. from laser.…

Mira-Optima-900-P-Data-Sheet.pdf

Mira-Optima-900-P-Data-Sheet.pdf

…pulse duration.
4 Measured rms in a 10 Hz to 2 MHz bandwidth.
5 Power drift in any two-hour period after warm-up when crystal's cooling water
is maintained ±0.1°C.
6 1/e2 diameter (±0.2 mm).
7 Full angle divergence (±0.3 mrad).
8 Typical measured M2 value of <1.3.…

ULTRAFAST LASERS Free-Space CPA Approach Uses Volume Holographic Gratings.pdf

ULTRAFAST LASERS Free-Space CPA Approach Uses Volume Holographic Gratings.pdf

…high power level (14
W). The beam quality of the VHG-based system was measured to be M2 <1.2, indicating that the
VHG elements do not significantly impact the beam quality of the pulse. And the measured
compressor efficiency of >80% represents a significant improvement over…

COHR CUBE DS 0818 4.pdf

COHR CUBE DS 0818 4.pdf

…100%. Specifications are valid for 100% power. Recommended power range is 70% to 100% power.
3 M2 and Beam Asymmetry measured with ModeMaster with 90/10 clip levels.
4 Polarization measurement is max./min. power with polarizer at 32 in. from laser with LM-2 power head at 37 in. from laser.…

COHR CUBE DS 0420 2.pdf

COHR CUBE DS 0420 2.pdf

…100%. Specifications are valid for 100% power. Recommended power range is 70% to 100% power.
3 M2 and Beam Asymmetry measured with ModeMaster with 90/10 clip levels.
4 Polarization measurement is max./min. power.
5 Static alignment tolerances are relative to the right bottom edge (in…

MiraHP DS 2.qxd

MiraHP DS 2.qxd


5 Measured RMS in a 10 Hz to 20 MHz bandwidth.
6 Power drift in any two-hour period after warm-up when crystal's cooling water is maintained at ±0.1°C.
7 1/e2 diameter (±0.2 mm) at exit port.
8 Full angle divergence (±0.3 mrad) at exit port.
9 Typical measured M2 value is…

Coherent Whitepaper - Astrella Tisch Sphere FINAL.pdf

Coherent Whitepaper - Astrella Tisch Sphere FINAL.pdf

…Astrella beam quality
measured during these experiments was < 1.04.
Astrella Amplifier
(7mJ, 35fs, 1kHz)
entrance cell
<1mbar
exit cell
1-3.5 bar
hollow core fiber
d-scan
compressor
d-scan
measurement
head
beam

00 SabreMFreD Preinstall.book

00 SabreMFreD Preinstall.book


with a mode cup. The expanded beam is sufficiently intense to
cause severe eye damage.
For more precise measurements, a beam scanner, spectrum analyzer
or M2 meter such as the Coherent ModeMasterTM Beam Propagation
Analyzer can be used. Contact Coherent Technical Support at…