Open- and closed-loop aberration correction by use of a quadrature interferometric wave-front sensor.
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 pi/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.
Baker
Kevin L
KL
Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 74550-9234, USA. baker7@llnl.gov
Stappaerts
Eddy A
EA
Wilks
Scott C
SC
Young
Peter E
PE
Gavel
Donald T
DT
Tucker
Jack W
JW
Silva
Dennis A
DA
Olivier
Scot S
SS