Low image reconstruction error using continuous real axis modulation

被引：3
作者：
Buckley, Edward
Wilkinson, Timothy D.
Cable, Adrian
机构：
[1] Light Blue Opt Ltd, St Johns Innovat Ctr, Cambridge CB4 0WS, England
[2] Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England
来源：
OPTICAL ENGINEERING | 2007年 / 46卷 / 02期
关键词：
computer-generated holograms; diffractive optics;
D O I：
10.1117/1.2671319
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A method of encoding computer-generated holograms, which is matched to the recently developed one-step phase retrieval (OSPR) algorithm, is described. Continuous amplitude and binary phase modulators are coupled to enable the encoding of the entire Fourier plane real axis, and an implementation using commonly available reflective and transmissive devices is described. It is shown that, if a binary phase spatial light modulator (SLM), employing high switching angle liquid crystal (LC) material, is deployed in such a coupled modulator arrangement, the resultant reconstructed images exhibit signal-to-noise ratios some 3.5 and 15 times greater than those currently achievable with continuous and binary phase modulation, respectively. (c) 2007 Society of Photo-Optical Instrumentation Engineers.
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页数：6
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