&lt;title&gt;Laser beam width, divergence, and propagation factor: status and experience with the draft standard&lt;/title&gt;

Fleischer, John M.

doi:10.1117/12.43659

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Cited by 4 publications

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“…As the current M 2 factor measurements are based on the paraxial beam [9], adjusting the optical path of the laser is necessary before the entire measurement process. Both the CCD imaging method and the blade scanning method can be used to measure the quality of the laser beam, but the collimation process of the optical path is often carried out manually with low accuracy, such as M 2 -200 s developed by Ophir-Spiricon Inc. and the ModeScan1780 developed by Photon Inc.…”

Section: Introductionmentioning

confidence: 99%

Measurement system with high accuracy for laser beam quality

Zeng

Xie

et al. 2015

Appl. Opt.

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Presently, most of the laser beam quality measurement system collimates the optical path manually with low efficiency and low repeatability. To solve these problems, this paper proposed a new collimated method to improve the reliability and accuracy of the measurement results. The system accuracy controlled the position of the mirror to change laser beam propagation direction, which can realize the beam perpendicularly incident to the photosurface of camera. The experiment results show that the proposed system has good repeatability and the measuring deviation of M² factor is less than 0.6%.

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Section: Introductionmentioning

confidence: 99%