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Optics Letters

Optics Letters


  • Vol. 19, Iss. 16 — Aug. 15, 1994
  • pp: 1228–1230

High-speed analog complex-amplitude liquid-crystal light modulator

Gary D. Sharp and Kristina M. Johnson  »View Author Affiliations

Optics Letters, Vol. 19, Issue 16, pp. 1228-1230 (1994)

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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)

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