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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 23, Iss. 2 — Jan. 15, 1984
  • pp: 278–289

Focusing by electrical modulation of refraction in a liquid crystal cell

Stephen T. Kowel, Dennis S. Cleverly, and Philipp G. Kornreich  »View Author Affiliations


Applied Optics, Vol. 23, Issue 2, pp. 278-289 (1984)
http://dx.doi.org/10.1364/AO.23.000278


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Abstract

The creation of a field-controlled variation of the index of refraction in a liquid crystal cell has been analyzed and experimentally verified. To obtain a spherical lens utilizing a simple electrode structure and capable of focusing arbitrary incoming polarizations requires four flat nematic liquid crystal cells. With electrodes fabricated well within the current capability of photolithography, near diffraction-limited performance in terms of the optical transfer function is predicted. The focusing capability of a liquid crystal lens was demonstrated using a single cell with linear transparent electrodes. A plano-convex cylindrical lens for a single incoming polarization was thus created. While the cell had a crude electrode structure, it affirmed all the major qualitative predictions. The fringing along the edge of the electrodes required for eventually obtaining near diffraction-limited performance was observed.

© 1984 Optical Society of America

History
Original Manuscript: February 7, 1983
Published: January 15, 1984

Citation
Stephen T. Kowel, Dennis S. Cleverly, and Philipp G. Kornreich, "Focusing by electrical modulation of refraction in a liquid crystal cell," Appl. Opt. 23, 278-289 (1984)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-23-2-278

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