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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 14, Iss. 22 — Nov. 15, 1989
  • pp: 1249–1251

Ferroelectric liquid-crystal tunable filter

H. J. Masterson, G. D. Sharp, and K. M. Johnson  »View Author Affiliations


Optics Letters, Vol. 14, Issue 22, pp. 1249-1251 (1989)
http://dx.doi.org/10.1364/OL.14.001249


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Abstract

A new discrete-channel tunable Lyot filter that uses ferroelectric liquid-crystal (FLC) smectic C* wave plates is described and demonstrated. The device is tuned by changing the retardation of each birefringent element. This is achieved by electrically rotating the FLC wave plates in each stage by 45°, which effectively changes the design wavelength of the Lyot filter. The transmission characteristics of such a device are demonstrated in a three-stage filter and show good agreement with theory. Advantages of the FLC tunable filter over existing filter structures include low switching voltages (±10 V), rapid tunability (~100 kHz), potentially high transmission and wide field of view, and large entrance aperture.

© 1989 Optical Society of America

History
Original Manuscript: February 23, 1989
Manuscript Accepted: August 23, 1989
Published: November 15, 1989

Citation
H. J. Masterson, G. D. Sharp, and K. M. Johnson, "Ferroelectric liquid-crystal tunable filter," Opt. Lett. 14, 1249-1251 (1989)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-14-22-1249

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