Paper
17 March 2000 Remarkable SHG enhancement by helical distributed feedback cavity spontaneously formed in ferroelectric liquid crystals
Hajime Hoshi, Doo-Han Chung, Ken Ishikawa, Hideo Takezoe
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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.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hajime Hoshi, Doo-Han Chung, Ken Ishikawa, and Hideo Takezoe "Remarkable SHG enhancement by helical distributed feedback cavity spontaneously formed in ferroelectric liquid crystals", Proc. SPIE 3955, Liquid Crystal Materials, Devices, and Flat Panel Displays, (17 March 2000); https://doi.org/10.1117/12.379978
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KEYWORDS
Second-harmonic generation

Polarization

Ferroelectric LCDs

Reflection

Light wave propagation

Photonic crystals

Dispersion

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