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

…laser beam in the Far Field will be M² times larger than calculated for a perfect
Gaussian beam. In other words, M² describes how close to "perfect-Gaussian" a laser beam is. For a perfect
Gaussian beam, M² is 1. For a non-prefect Gaussian beam, M² is >1.
Laser Beam Quality…

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Mode Master White Paper July 2011 final.pdf

…2
The M2 factor is used in the manner as follows to
develop actual beam radius and focus spot size
formulas.
Actual Beam Radius
The Gaussian beam propagation formula used to
calculate beam radius at any location is (in air or
vacuum):

2
2
0
0…

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10 Tips White Paper 1 rev9

…only with circularly symmetric and near Gaussian beams.
Beam Profiler M² Measurement
Toll Free: (800 ) 343-4912 · Tel: (408)764-4042 · Fax: (503)454-5727
10 Tips For Selecting a Beam Diagnostics System
"Knowing these things about laser beam diagnostics will help you make a better…

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

…343-4912 · Tel: (408) 764-4042 · Fax: (503) 454-5727 83
Lasiris Flat Top Projector
Gaussian to Flat Top Using Refractive Beam Shaping Optics
Flow Cytometry
Option
Input Beam
Characteristics
Output Flat Top
Characteristics
Coherent has been very successful…

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Microsoft Word - kW Thermopile Damage Threshold.doc

…3
The PM5K is recommended for measurement of any Gaussian beams greater than 3 kW. It
PM5K has been shown to withstand Gaussian beams under these conditions:
Beam Diameter and Flow Rate for Gaussian Beams
Power 1/e^2 Beam Diameter Flow Rate
*
1-2 kW >15 mm 15 LPM (4 GPM)…

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Properties-of-Structured-Light-Application-Note.pdf

…Laser Lines Clip Gaussian vs. Cylinder vs. Diffractive vs. ALG Gaussian Diffractive Multi-cylindrical lens array ALG Variables affecting line uniformity Input beam position Wavelength Projection distance Input beam position Input beam size Projection distance Detector size Input beam size Detector…

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COHR PowerMax-Pro kW DS 0417 5 FINAL.pdf

…the beam size to 25 mm, the sensor could be used with modulated peak power up to 7 kW for 100 milliseconds.
5) These curves are for Gaussian beam profiles. Flatter beams can handle higher powers (~5%) for longer lengths of time, and beams with hot spots or
"super Gaussian" beams the curves…

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Microsoft Word - Understand Different Laser Beam Rev 1 Final.doc

…using vernier
callipers. A commonly used definition of beam
width is the width at which the beam intensity
has fallen to 1/e² (13.5%) of its peak value.
This is derived from the propagation of a
Gaussian beam and is appropriate for lasers
operating in the fundamental…

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BeamMaster USB Knife-Edge Based Beam Profilers

…beam width, and the profile intensity data is autoscaled (optional) to fit the display height. Added detail can be obtained in a special high-resolution mode. This is very useful for analyzing beams that are far from Gaussian in shape or smaller than 100 µm. Beam Position and Ellipticity The beam…

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HELIOS

…Specifications 50 kHz 125 kHz 50 kHz 125 kHz Pulse Width (FWHM) <0.79 ns <0.69 ns <0.95 ns <0.69 ns <0.85 ns Spatial Mode TEM 00 (M 2 < 1.25) Beam Diameter (Gaussian Fit, 1/e2) 3.5 mm 2.5 mm 2 mm Polarization Linear Jitter (between sequential pulses, gating mode) < ±2 ns Jitter (trigger to laser…

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Magnum II Laser

…keep the laser diode at a constant temperature. The laser beam can be modulated by an external signal and all models can operate in either CW or external modulation mode. The standard unit provides voltage outputs proportional to the beam power, laser diode current and laser diode temperature, for…

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COHR WP OPSL Invariant Beam Properties final 5.3.18.pdf

…longitudinal gradient, particularly if the gain crystal is only pumped from
one end.
Optimizing the output power in a high quality Gaussian beam profile (TEM00
) requires a careful
design of the resonator, inclusive of the best possible spatial match of the laser mode with the…

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