Experimental results are presented for an adaptive optics system based on a quadrature Twyman–Green interferometric wave-front sensor. The system uses a circularly polarized reference beam to form two interferograms with a π/2 phase shift. The experiments conducted used Kolmogorov phase screens to simulate atmospheric phase distortions. Strehl ratio improvements by a factor of 8, to an absolute value of 0.45, are demonstrated.
© 2004 Optical Society of America
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(090.1000) Holography : Aberration compensation
(120.2880) Instrumentation, measurement, and metrology : Holographic interferometry
Kevin L. Baker, Eddy A. Stappaerts, Scott C. Wilks, Peter E. Young, Donald T. Gavel, Jack W. Tucker, Dennis A. Silva, and Scot S. Olivier, "Open- and closed-loop aberration correction by use of a quadrature interferometric wave-front sensor," Opt. Lett. 29, 47-49 (2004)