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Proceedings Paper

Synthetic Digital-Phase Gratings - Design, Features, Applications
Author(s): H. Dammann
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Paper Abstract

Digital-phase gratings are synthetic optical elements operating in-line as direct-vision components. They are called digital because only a few discrete values are allowed for the phase-structure within each grating period. Digital-phase gratings can be used for different applications. Three examples are described: star-couplers using binary-phase gratings for generating a central block of diffraction orders with equal intensity; color-splitters using gratings with more than two phase-levels; alterable gratings the blaze of which can be switched between the 3 central diffraction orders. Surface-relief digital-phase gratings are made by reactive ion etching in glass, and cheap plastic copies are obtained by a simple replication technique.

Paper Details

Date Published: 26 October 1983
PDF: 7 pages
Proc. SPIE 0437, Intl Conf on Computer-Generated Holography, (26 October 1983); doi: 10.1117/12.937133
Show Author Affiliations
H. Dammann, Philips GmbH Forschungslaboratorium Hamburg (Germany)

Published in SPIE Proceedings Vol. 0437:
Intl Conf on Computer-Generated Holography
Sing H. Lee, Editor(s)

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