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22 April 1993 Effects of spherical aberration on laser beam quality
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Proceedings Volume 1834, Laser Energy Distribution Profiles: Measurement and Applications; (1993) https://doi.org/10.1117/12.143847
Event: Applications in Optical Science and Engineering, 1992, Boston, MA, United States
Abstract
We present simple formulas for the degradation in beam quality factor M2 of a laser beam caused by quartic phase aberrations, such as may occur in spherically aberrated optical components, thermally aberrated rods or windows, or divergent beams passing through planar dielectric interfaces, as in unstable-resonator diode lasers. The beam quality degradation in all cases is found to be small for beams smaller than a certain critical spot size wq, but degrades as M2 approximately equals (w/wq)4 for beam sizes greater than wq. Experimental results confirming the beam quality degradation from an uncorrected plano- convex lens are also given.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Anthony E. Siegman and Joseph Ruff "Effects of spherical aberration on laser beam quality", Proc. SPIE 1834, Laser Energy Distribution Profiles: Measurement and Applications, (22 April 1993); https://doi.org/10.1117/12.143847
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