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Proceedings Paper

Remarkable SHG enhancement by helical distributed feedback cavity spontaneously formed in ferroelectric liquid crystals
Author(s): Hajime Hoshi; Doo-Han Chung; Ken Ishikawa; Hideo Takezoe
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Paper Abstract

Remarkable enhancement of second-harmonic (SH) generation in a ferroelectric liquid crystal was theoretically studied. The enhancement occurs when SH wavelength coincides with the wavelength at odd-number-th dips of subsidiary oscillation in one edge of the selective reflection band. To interpret this behavior, the electric field of inhomogeneous and homogeneous SH light in a cell was simulated for a right-handed (R) ferroelectric liquid crystal. It was found that R-circularly polarized light forms a standing wave inside the cell at the odd-number-th dips, when two counter-propagating beams with the same polarization (e.g., R-R) are incident. On the other hand, inhomogeneous and homogeneous waves are out of phase to each other at the bounding surface at the even-number-th dips, so that no enhancement occurs. As for an incidence of R- and L-polarized light, enhanced SH light is generated only toward the R-incidence side. The SH light is L-polarized in this case, while R-polarized SHG is observed from both sides for the incidence of counterwaves with the same polarization.

Paper Details

Date Published: 17 March 2000
PDF: 10 pages
Proc. SPIE 3955, Liquid Crystal Materials, Devices, and Flat Panel Displays, (17 March 2000); doi: 10.1117/12.379978
Show Author Affiliations
Hajime Hoshi, Tokyo Institute of Technology (Japan)
Doo-Han Chung, Tokyo Institute of Technology (Japan)
Ken Ishikawa, Tokyo Institute of Technology (Japan)
Hideo Takezoe, Tokyo Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 3955:
Liquid Crystal Materials, Devices, and Flat Panel Displays
Ranganathan Shashidhar; Bruce Gnade, Editor(s)

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