Performance evaluation of a liquid-crystal-on-silicon spatial light modulator

被引：49

作者：

Wang, XH ^{[1
]}

Wang, B

Pouch, J

Miranda, F

Anderson, JE

Bos, PJ

机构：

[1] Kent State Univ, Inst Liquid Crystal, Kent, OH 44242 USA

[2] NASA, Glenn Res Ctr, Cleveland, OH 44135 USA

[3] Hana Microdisplay Technol Inc, Twinsburg, OH 44087 USA

来源：

OPTICAL ENGINEERING | 2004年 / 43卷 / 11期

基金：

美国国家航空航天局;

关键词：

D O I：

10.1117/1.1794706

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

2-D optical phased array antennas formed by a liquid crystal on silicon (LCOS) spatial light modulator are described for free-space laser communication and high-resolution wavefront control. The device consists of an 2-D array of 1024x768 phase modulator elements, each with controlled voltage, and can induce a phase shift from 0 to 2pi for wavelengths up to the near IR. When the device is used as a wavefront corrector, 18.7 waves peak-valley (at 632.8 nm) of aberration in the optical system is corrected to a residual of 1/9 wave peak-valley, or 1/30 wave rms. The Strehl ratio improved from 0.006 to 0.83 after correction. An additional linear phase ramp was added to the correction phase ramp to simultaneously correct and steer the laser beam. Continuous steering over +/-4 mrad in the X-Y plane with a steering accuracy higher than 10 murad has been obtained. The 1-D beam-steering efficiency is 80% at the maximum steering angle of 4 mrad. These results suggest that an LCOS device can be used to achieve very high-resolution wavefront control at very high efficiency. (C) 2004 Society of Photo-Optical Instrumentation Engineers.

引用

页码：2769 / 2774

页数：6

共 9 条

[1]

Creath K, 2000, P SOC PHOTO-OPT INS, V4101, P47

[2] Novel spatial light modulators for active and adaptive optics [J].

Dayton, D ;

Restaino, S ;

Gonglewski, J .

HIGH-RESOLUTION WAVEFRONT CONTROL: METHODS, DEVICES, AND APPLICATIONS II, 2000, 4124 :78-88

[3] Measurement and modeling of the angular dispersion in liquid crystal broadband beam steering devices [J].

Dominic, VG ;

Carney, AJ ;

Watson, EA .

OPTICAL ENGINEERING, 1996, 35 (12) :3371-3379

[4] Spatially resolved phase imaging of a programmable liquid-crystal grating [J].

Friedman, LJ ;

Hobbs, DS ;

Lieberman, S ;

Corkum, DL ;

Nguyen, HW ;

Sharp, RC ;

Dorschner, TA .

APPLIED OPTICS, 1996, 35 (31) :6236-6240

[5] Holographic compensation of severe dynamic aberrations in membrane-minor based telescope systems [J].

Gruneisen, MT ;

Martinez, T ;

Wick, DV ;

Wilkes, JM ;

Baker, JT ;

Percheron, I .

HIGH-RESOLUTION WAVEFRONT CONTROL: METHODS, DEVICES, AND APPLICATIONS, 1999, 3760 :142-152

[6]

GRUNEISEN MT, 1997, OSA TOPS, V14, P220

[7] Wave-front correction and production of Zernike modes with a liquid-crystal spatial light modulator [J].

Love, GD .

APPLIED OPTICS, 1997, 36 (07) :1517-1524

[8] Optical phased array technology [J].

McManamon, PF ;

Dorschner, TA ;

Corkum, DL ;

Friedman, LJ ;

Hobbs, DS ;

Holz, M ;

Liberman, S ;

Nguyen, HQ ;

Resler, DP ;

Sharp, RC ;

Watson, EA .

PROCEEDINGS OF THE IEEE, 1996, 84 (02) :268-298

[9] Diffraction efficiency of thin film holographic beam steering devices [J].

Titus, CM ;

Pouch, J ;

Nguyen, H ;

Miranda, F ;

Bos, PJ .

HIGH-RESOLUTION WAVEFRONT CONTROL: METHODS, DEVICES, AND APPLICATIONS IV, 2002, 4825 :177-188

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