Measurement of laser spot quality

Tomas D. Milster; Jeffrey P. Treptau

doi:10.1117/12.46287

1 May 1991 Measurement of laser spot quality

Proceedings Volume 1414, Laser Beam Diagnostics; (1991) https://doi.org/10.1117/12.46287
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States

Abstract

Several ways of measuring spot quality are compared. Examination in detail is made of various figures of merit such as full-width-at-half maximum (FWHM), full-width-at-1/e2 maximum, Strehl ratio, and encircled energy. The paper describes application for optical data storage, but results can be applied to other areas like space communications and high-energy lasers. The finding is that the optimum figure of merit in many cases is Strehl ratio.

Citation Download Citation

Tomas D. Milster and Jeffrey P. Treptau "Measurement of laser spot quality", Proc. SPIE 1414, Laser Beam Diagnostics, (1 May 1991); https://doi.org/10.1117/12.46287

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