Balancing diffraction efficiency and laser damage in diffractive optics

Steven T. Glass; Thomas J. Suleski

doi:10.1117/12.2275057

6 September 2017 Balancing diffraction efficiency and laser damage in diffractive optics

Steven T. Glass, Thomas J. Suleski

Author Affiliations +

Proceedings Volume 10374, Optical Modeling and Performance Predictions IX; 103740C (2017) https://doi.org/10.1117/12.2275057
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

Diffractive optics enable applications requiring high power laser focusing and beam shaping. The ability of such components to resist damage is of mounting importance as lasers attain higher power levels. Diffractive optics inherently contain discontinuities that can enhance electric field distributions within the component. Researchers have previously analyzed subwavelength, anti-reflective gratings for geometrical field enhancement effects, but conventional diffractive elements have not received as much attention. In this paper, we apply rigorous electromagnetic simulations to multi-level diffractive optics to explore potential connections between basic grating parameters (period, depth, number of levels), geometrical field enhancement, and laser damage.

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Steven T. Glass and Thomas J. Suleski "Balancing diffraction efficiency and laser damage in diffractive optics", Proc. SPIE 10374, Optical Modeling and Performance Predictions IX, 103740C (6 September 2017); https://doi.org/10.1117/12.2275057

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