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Laser Beam Propagation Analyzer

Photonics Spectra
Jul 2011
Ophir, PhotonicsRequest Info
The NanoModeScan M2 laser beam propagation analyzer from Ophir Photonics enables quantitative measurement and viewing of high-power CO2 laser beams. The system is easy to set up and align. An M2 measurement can be made in as little as 20 s, using either the ISO 11146 or Rayleigh method. The analyzer reports beam waist diameter and location, divergence and Rayleigh range for each axis. It is suitable for CO2 laser-based materials processing, machining and marking applications where laser performance must be adjusted in real time. The software-controlled variable scan speed allows measurement of continuous-wave and kilohertz-pulsed lasers, covering the wavelength range from the UV to the far-IR. Both 200- and 400-mm lenses are available to generate the proper artificial waist for the laser source under test.


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Rayleigh range
In the region of a Gaussian beam focus by a diffraction-limited lens, it is the axial distance from the point of minimum beam waist (Wo) to the point where the beam diameter has increased to .
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