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Proceedings Paper

Measurement of laser spot quality
Author(s): Tomas D. Milster; Jeffrey P. Treptau
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Paper 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.

Paper Details

Date Published: 1 May 1991
PDF: 6 pages
Proc. SPIE 1414, Laser Beam Diagnostics, (1 May 1991); doi: 10.1117/12.46287
Show Author Affiliations
Tomas D. Milster, Optical Sciences Ctr./Univ. of Arizona (United States)
Jeffrey P. Treptau, Optical Sciences Ctr./Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 1414:
Laser Beam Diagnostics
Robert N. Hindy; Youssef Kohanzadeh, Editor(s)

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