Method to reduce sidelobes of multistage Lyot filters
Applied Optics, Vol. 49, Issue 8, pp. 1280-1287 (2010)
http://dx.doi.org/10.1364/AO.49.001280
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Abstract
We propose a method to reduce sidelobes of multistage Lyot filters by substituting certain stages with two-plate fan Šolc stages. Parallel-aligned nematic liquid crystal (LC) cells are used as variable retarders to compose multistage Lyot LC tunable filters (LCTF). The simulation of a four-stage Lyot LCTF and a tunable filter, comprising two stages of Lyot filter and two stages of two-plate Šolc filter, are compared. With this method, the sidelobes are reduced and the full width at half-maximum intensity of transmission peak is also reduced. Experimental results and theoretical analysis are presented in detail to verify this method.
© 2010 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
(350.2460) Other areas of optics : Filters, interference
(230.7408) Optical devices : Wavelength filtering devices
ToC Category:
Instrumentation, Measurement, and Metrology
History
Original Manuscript: October 22, 2009
Revised Manuscript: December 24, 2009
Manuscript Accepted: January 28, 2010
Published: March 4, 2010
Citation
Guowei Yang, Zhenrong Zheng, Haifeng Li, and Xu Liu, "Method to reduce sidelobes of multistage Lyot filters," Appl. Opt. 49, 1280-1287 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-8-1280
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