Time fluctuations of the phase modulation in a liquid crystal on silicon display: characterization and effects in diffractive optics

被引：133
作者：
Lizana, A. [1 ]
Moreno, I. [2 ]
Marquez, A. [3 ]
Iemmi, C. [4 ]
Fernandez, E. [2 ]
Campos, J. [1 ]
Yzuel, M. J. [1 ]
机构：
[1] Univ Autonoma Barcelona, Dept Fis, Bellaterra 08193, Spain
[2] Univ Miguel Hernandez, Dept Ciencia Mat Opt & Tecnol Elect, Elche, Spain
[3] Univ Alicante, Dept Fis Ingn Sistemas & Teoria Senal, E-03080 Alicante, Spain
[4] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, RA-1428 Buenos Aires, DF, Argentina
来源：
OPTICS EXPRESS | 2008年 / 16卷 / 21期
关键词：
D O I：
10.1364/OE.16.016711
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper we provide evidence of the temporal fluctuations of the phase modulation property of a liquid crystal on silicon (LCoS) display, and we analyze its effect when the device is used for displaying a diffractive optical element. We use a commercial twisted nematic LCoS display configured to produce a phase-only modulation, and we provide time resolved measurements of the diffraction efficiency that show rapid fluctuations of the phase modulation, in the millisecond order. We analyze how these fluctuations have to be considered in two typical methods for the characterization of the phase modulation: two beam interference and diffraction from a binary grating. We finally provide experimental results on the use of this device for displaying a computer generated hologram. A reduction of the modulation diffraction efficiency results from the phase modulation fluctuation. (C) 2008 Optical Society of America
引用
收藏
页码：16711 / 16722
页数：12
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