In-situ measurement of output coupler absorption using a beam propagation analyzer

Michael W. Sasnett; Timothy J. Johnston

doi:10.1117/12.167595

1 February 1994 In-situ measurement of output coupler absorption using a beam propagation analyzer

Michael W. Sasnett, Timothy J. Johnston

Proceedings Volume 2062, Lasers as Tools for Manufacturing; (1994) https://doi.org/10.1117/12.167595
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

Abstract

Optical characteristics of the output coupler in a high-power CO₂ laser can be measured while the optic is in the laser and functioning normally. This is done by using a beam propagation analyzer to measure the rate at which the beam waist location changes with increasing beam power. The characteristics that can be measured with this technique include the fraction of beam power absorbed by the optic and its radius of curvature.

Citation Download Citation

Michael W. Sasnett and Timothy J. Johnston "In-situ measurement of output coupler absorption using a beam propagation analyzer", Proc. SPIE 2062, Lasers as Tools for Manufacturing, (1 February 1994); https://doi.org/10.1117/12.167595

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