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NCUEIR > College of Science > Graduate Institute of Photonics Technologies > Periodical Articles > Item 987654321/15071

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/15071

Title:	Second Harmonic Generation Studies of Polymer-Stabilized Cholesteric Texture Films
Authors:	Fuh, Andy Ying-Guey;Huang, Chi-Yen;Lau, Cheuk-Wah
Contributors:	光電科技研究所
Keywords:	Cholesteric liquid crystal;Second harmonic generation;Polymer network;Dielectric gradient;Focal conic
Date:	1997-05
Issue Date:	2013-01-07T02:09:51Z
Publisher:	The Japan Society of Applied Physics
Abstract:	Using a mode-locking Nd:YAG laser, we measured the second harmonic generation (SHG) of polymer-stabilized cholesteric texture (PSCT) films. The SHG observed in these samples is due to the dielectric gradient which arises from the interfaces between the cholesteric liquid crystal/polymer and those between the adjacent cholesteric focal conic domains having a different helical axis. Both the SHG intensities and the electro-optical characteristics of PSCT films were measured as a function of the polymer concentration. In addition, polymer network structures formed in PSCT films were investigated. Good correlations among the SHG measurements, electro-optical characteristics, and the polymer network morphologies were found. This means that SHG measurements could provide us with another qualitative, nondestructive method to analyze the PSCT films.
Relation:	Jpn. J. Appl. Phys., 36(5A): 2754-2759
Appears in Collections:	[Graduate Institute of Photonics Technologies] Periodical Articles

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