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Opt Lett. 1991 Mar 15;16(6):423-5.

Efficient multilevel phase holograms for CO(2) lasers.

Abstract

Multilevel phase holograms for monochromatic radiation at a wavelength of 10.6 microm are recorded as surface relief gratings with multilevel discrete binary steps. Our experiments show that diffraction efficiencies close to 90% can be achieved both for transmissive and reflective elements. The reduction of efficiency due to errors in the depth and the width of the step levels is considered.

PMID:
19773954
DOI:
10.1364/ol.16.000423

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