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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 4, Iss. 9 — Sep. 4, 2009

Liquid crystal Lyot tunable filter with extended free spectral range

Ofir Aharon and I. Abdulhalim  »View Author Affiliations


Optics Express, Vol. 17, Issue 14, pp. 11426-11433 (2009)
http://dx.doi.org/10.1364/OE.17.011426


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Abstract

Extension of the dynamic range of liquid crystal tunable Lyot filter is demonstrated by incorporating with it a liquid crystal variable retarder as an eliminator for the third and fourth order peaks. The filter is continuously tunable in the range 500 nm to 900 nm with a nominal width in the range 50nm-100nm. Design procedure is described including the exact solution to the LC director profile and the suitability for biomedical optical imaging applications. Flexibility in the design is proposed by applying different voltages to the different liquid crystal retarders thus compensating for small thickness deviations from the nominal values and obtaining the high dynamic range.

© 2009 Optical Society of America

OCIS Codes
(120.2440) Instrumentation, measurement, and metrology : Filters
(160.3710) Materials : Liquid crystals
(230.3720) Optical devices : Liquid-crystal devices
(310.5448) Thin films : Polarization, other optical properties
(230.7408) Optical devices : Wavelength filtering devices

ToC Category:
Optical Devices

History
Original Manuscript: May 18, 2009
Revised Manuscript: June 17, 2009
Manuscript Accepted: June 18, 2009
Published: June 23, 2009

Virtual Issues
Vol. 4, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Ofir Aharon and I. Abdulhalim, "Liquid crystal Lyot tunable filter with extended free spectral range," Opt. Express 17, 11426-11433 (2009)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-17-14-11426


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