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Proceedings Paper

Display of high-diffraction-efficiency computer-generated holograms using a magneto-optic spatial light modulator
Author(s): Joseph Neil Mait
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Paper Abstract

Three principle issues in computer-generated hologram (CGH) design are (1) the data that constitute the hologram, (2) the coding used to construct the hologram from the data, and (3) the technology used to fabricate the hologram. Fabrication technology influences both the nature (data) and form (coding) of the hologram and ranges from high space-bandwidth photoresist holograms exposed using c-beam milled binary masks to conventional photo-reproduced images of gray-scale and binary holograms and, finally, to optically- and electronically-addressable spatial-light modulators (SLMs). The design of binary amplitude Fourier holograms for display on a magneto-optic SLM (MOSLM) is considered in this work. The binary nature of the device provides two options for coding, either cell-oriented coding or point-oriented coding. Point-oriented coding is discussed herein; the MOSLM display of cell-oriented holograms has been reported [1]. Further, techniques that have been developed for generating point-oriented binary amplitude Fourier hologram data include a direct binary search (DBS) technique [2] and an iterative Fourier transform {3,4] technique. The iterative technique is discussed herein as a means for designing high diffraction efficiency holograms. The MOSLM display of DBS designed holograms has also been reported [2].

Paper Details

Date Published: 1 May 1990
PDF: 11 pages
Proc. SPIE 1211, Computer and Optically Formed Holographic Optics, (1 May 1990); doi: 10.1117/12.17954
Show Author Affiliations
Joseph Neil Mait, Harry Diamond Labs. (United States)

Published in SPIE Proceedings Vol. 1211:
Computer and Optically Formed Holographic Optics
Ivan Cindrich; Sing H. Lee, Editor(s)

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