A homogeneously aligned smectic A* liquid-crystal quarter-wave retarder is used to produce analog complex-amplitude modulation of light through the electroclinic effect. The device consists of a reflection-mode polarization rotative phase shifter enhanced by an asymmetric resonator. With an entrance mirror reflectivity of 70%, an analog modulation of 65% of a fringe was observed. The 10–90% response time of the liquid crystal was measured to be 25 μs at 25°C.
© 1994 Optical Society of America
Original Manuscript: March 3, 1994
Published: August 15, 1994
Gary D. Sharp and Kristina M. Johnson, "High-speed analog complex-amplitude liquid-crystal light modulator," Opt. Lett. 19, 1228-1230 (1994)