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http://hdl.handle.net/2289/3221
Title: | Optical diffraction in nonuniform cholesteric liquid crystals: phase-grating mode |
Authors: | Giridhar, M.S. Suresh, K.A. Ranganath, G.S. |
Issue Date: | Jan-2002 |
Publisher: | Optical Society of America |
Citation: | Journla of the Optical Society of America A, 2002, Vol.19, p19-23 |
Abstract: | We have worked out the diffraction pattern in the phase-grating mode of a cholesteric liquid crystal (cholesteric) with a pitch gradient. The pitch gradients considered are symmetric and asymmetric with respect to the sample center. For a uniform input beam, the intensity profile of each diffraction order becomes broad. Further, in the symmetric gradient, the profile of each order is irregular, while in the asymmetric gradient it is nearly flat. For a Gaussian input beam, for the symmetrically deformed structure the profile for each order is asymmetric, while for the asymmetrically deformed structure, the profiles just becomes broad. We find that even a 5% nonuniformity in the pitch can drastically alter the diffraction profiles. |
Description: | Restricted Access. |
URI: | http://hdl.handle.net/2289/3221 |
ISSN: | 1084-7529 |
Alternative Location: | http://www.opticsinfobase.org/abstract.cfm?URI=josaa-19-1-19 |
Copyright: | 2002 Optical Society of America |
Appears in Collections: | Research Papers (SCM) |
Files in This Item:
File | Description | Size | Format | |
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2002 JR OPTICAL SOC OF AMERICA 'A' V19 19p.pdf Restricted Access | Restricted Access. | 139.11 kB | Adobe PDF | View/Open Request a copy |
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