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http://hdl.handle.net/2289/2949
Title: | New nonlinear optical processes in liquid crystals |
Authors: | Srivatsa, S.K. Ranganath, G.S. |
Keywords: | Liquid crystals Director fluctuations Director reorientation Tilt angle Optical solitons |
Issue Date: | Jun-2000 |
Publisher: | Elsevier B.V. |
Citation: | Optics Communications, 2000, Vol.180, p349-359 |
Abstract: | We have worked out some consequences of the optical nonlinearities due to laser induced changes in the order parameter of a liquid crystal. The change in the order parameter can be affected by laser induced suppression of the director fluctuations in liquid crystals and or changes in the tilt angle of smectic liquid crystals. Both the processes lead to well known nonlinear optical effects like self-focusing, self-divergence, self-phase modulation, wave mixing, and so on. In addition, we predict some new phenomena like self-iridescence and new types of optical spatial solitons. In the case of chiral liquid crystals in the short wavelength limit the laser beam induces a change in the twist and at the long wavelength edge of the Bragg band it leads to temporal oscillations in the twist and the transmitted intensity. In smectic liquid crystals interesting periodic structures in a standing laser wave are to be expected. |
Description: | Restricted Access. |
URI: | http://hdl.handle.net/2289/2949 |
ISSN: | 0140-3664 |
Alternative Location: | http://dx.doi.org/10.1016/S0030-4018(00)00706-9 |
Copyright: | 2000 Elsevier B.V. |
Appears in Collections: | Research Papers (SCM) |
Files in This Item:
File | Description | Size | Format | |
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2000 OC.180.P349.pdf Restricted Access | Restricted Access | 161.75 kB | Adobe PDF | View/Open Request a copy |
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