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
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
收藏
页码:1781 / 1783
页数:3
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