High-speed horizontal-path atmospheric turbulence correction with a large-actuator-number microelectromechanical system spatial light modulator in an interferometric phase-conjugation engine

被引：27

作者：

Baker, KL ^{[1
]}

Stappaerts, EA ^{[1
]}

Gavel, D ^{[1
]}

Wilks, SC ^{[1
]}

Tucker, J ^{[1
]}

Silva, DA ^{[1
]}

Olsen, J ^{[1
]}

Olivier, SS ^{[1
]}

Young, PE ^{[1
]}

Kartz, MW ^{[1
]}

Flath, LM ^{[1
]}

Kruelevitch, P ^{[1
]}

Crawford, J ^{[1
]}

Azucena, O ^{[1
]}

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

来源：

OPTICS LETTERS | 2004年 / 29卷 / 15期

关键词：

D O I：

10.1364/OL.29.001781

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Results of atmospheric propagation for a high-speed, large-actuator-number adaptive optics system are presented. The system uses a microelectromechanical system- (MEMS-) based spatial light modulator correction device with 1024 actuators. Tests over a 1.35-km path achieved correction speeds in excess of 800 Hz and Strehl ratios close to 0.5. The wave-front sensor was based on a quadrature interferometer that directly measures phase. This technique does not require global wave-front reconstruction, making it relatively insensitive to scintillation and phase residues. The results demonstrate the potential of large-actuator-number MEMS-based spatial light modulators to replace conventional deformable mirrors. (C) 2004 Optical Society of America.

引用

页码：1781 / 1783

页数：3