A twisted nematic liquid-crystal television (LCTV) has been used together with Twyman–Green type interferometers to measure and compensate the phase distortion of a wave front. The twisted nematic LCTV has been operated as a phase-only modulator, and its phase retardation ability has been doubled in these experiments. The phase function of a phase object has been measured in different arrangements of the experimental setup.
© 1996 Optical Society of America
Original Manuscript: July 28, 1995
Published: July 1, 1996
Rensheng Dou and Michael K. Giles, "Phase measurement and compensation of a wave front using a twisted nematic liquid-crystal television," Appl. Opt. 35, 3647-3652 (1996)