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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 19 — Jul. 1, 2009
  • pp: 3766–3770

Electrically switchable computer-generated hologram using a liquid crystal cell with a proton beam patterned polymethylmethacrylate substrate

D. Luo, X. W. Sun, Y. J. Liu, H. T. Dai, O. Y. Sheng, M. B. H. Breese, and Z. Raszewski  »View Author Affiliations

Applied Optics, Vol. 48, Issue 19, pp. 3766-3770 (2009)

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An electrically switchable computer-generated hologram (CGH) was fabricated using a liquid crystal (LC) cell. A polymethylmethacrylate (PMMA) film, which was spin-coated on one glass substrate of the LC cell, was patterned by a focused 2 Me V proton beam with a CGH phase pattern ( 2 μm resolution). With an applied voltage on the LC cell CGH sample, an index modulation was produced between the regions with and without PMMA because of the reorientation of LC molecules under the external electric field. The maximum diffraction efficiency measured was about 28.7%. The operating voltage was below 15 V rms .

© 2009 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(090.1760) Holography : Computer holography
(230.3720) Optical devices : Liquid-crystal devices

ToC Category:

Original Manuscript: April 14, 2009
Manuscript Accepted: June 8, 2009
Published: June 24, 2009

D. Luo, X. W. Sun, Y. J. Liu, H. T. Dai, O. Y. Sheng, M. B. H. Breese, and Z. Raszewski, "Electrically switchable computer-generated hologram using a liquid crystal cell with a proton beam patterned polymethylmethacrylate substrate," Appl. Opt. 48, 3766-3770 (2009)

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