Diffractive Devices In High Power Laser Beam Handling

Fritz Keilmann

doi:10.1117/12.950167

28 March 1989 Diffractive Devices In High Power Laser Beam Handling

Fritz Keilmann

Proceedings Volume 1024, Beam Diagnostics and Beam Handling Systems; (1989) https://doi.org/10.1117/12.950167
Event: 1988 International Congress on Optical Science and Engineering, 1988, Hamburg, Germany

Abstract

Diffraction from structured surfaces is discussed as a new principle in high power laser beam optics. Useful properties of structured surfaces include, for example, polarization anisotropy, diffractive beam splitting and diffractive attenuation. Since these surfaces can be fabricated from low-loss materials, e.g. metals, the intrinsic absorption can be low enough to allow operating power levels high in the multikilowatt range. Several practical devices for high power laser beam handling can be based on diffractive concepts. For example, linear and circular polarizers can be fabricated as all-metal mirrors. These can be used both intra-and extracavity, and can be integrated into focusing surfaces. Diffractive loss from all-metal perforated screens has already been used to develop a precision step attenuator with applications in beam diagnostics as well as in laser process studies.

Citation Download Citation

Fritz Keilmann "Diffractive Devices In High Power Laser Beam Handling", Proc. SPIE 1024, Beam Diagnostics and Beam Handling Systems, (28 March 1989); https://doi.org/10.1117/12.950167

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