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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 19 — Jul. 1, 2009
  • pp: 3737–3741

Fast switching characteristics of a microlens array using the electroclinic effect of Sm A * liquid crystals

Yong-Min Lee, Jin Seog Gwag, Yoonseuk Choi, Kwang-Ho Lee, Chang-Jae Yu, and Jae-Hoon Kim  »View Author Affiliations


Applied Optics, Vol. 48, Issue 19, pp. 3737-3741 (2009)
http://dx.doi.org/10.1364/AO.48.003737


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Abstract

We present a microlens array characterized by the electroclinic effect of chiral smectic A ( Sm A * ) liquid crystals, which show the very fast dynamic switching characteristics required in high-speed optical devices. In order to easily control the intensity at the focal length of the proposed dynamic microlens structure, we adopt a solid-type liquid crystal polymer with optical anisotropy, which can split the beam intensity into two directions, depending on the vectorial portion of the polarization state of the light. The proposed microlens shows a focal intensity tunable by controlling the polarization of light at the Sm A * liquid crystal. The lens has a very fast switching time of about 24 μs , which is several times faster than conventional microlens arrays with surface-stabilized ferroelectric liquid crystals.

© 2009 Optical Society of America

OCIS Codes
(160.3710) Materials : Liquid crystals
(220.3630) Optical design and fabrication : Lenses
(230.3720) Optical devices : Liquid-crystal devices

ToC Category:
Optical Devices

History
Original Manuscript: April 1, 2009
Revised Manuscript: May 28, 2009
Manuscript Accepted: June 8, 2009
Published: June 23, 2009

Citation
Yong-Min Lee, Jin Seog Gwag, Yoonseuk Choi, Kwang-Ho Lee, Chang-Jae Yu, and Jae-Hoon Kim, "Fast switching characteristics of a microlens array using the electroclinic effect of SmA* liquid crystals," Appl. Opt. 48, 3737-3741 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-19-3737

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