Formation of holographic gratings in polymer-dispersed liquid crystals using off-resonant light

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/103424

Title:	Formation of holographic gratings in polymer-dispersed liquid crystals using off-resonant light
Authors:	劉鄭楷;Fuh, Andy Ying-Guey;Chen, Wei-Ko;Cheng, Ko-Ting;Liu, Yen-Chen;Liu, Cheng-Kai;Chen, Yuan-Di
Contributors:	理學院光電科學與工程學系
Keywords:	Absorbance;Diffraction;Diffraction gratings;Electrooptical;Gratings (spectra);Laser beams;Liquid crystals;Phase separation
Date:	2015-01-01
Issue Date:	2026-04-23 11:30:13 (UTC+8)
Publisher:	The Optical Society
Abstract:	摘要： This paper presents the electro-optical characteristics of polarization-independent holographic gratings (HGs) recorded in polymer-dispersed liquid crystals (PDLCs) using off-resonant laser beam. The key mechanism is based on the low light absorbance by the materials used, which enables a slow polymerization-induced phase separation. The off-resonant light can penetrate through the cell without much energy loss (absorbance) and can be uniformly absorbed across the LC cell to produce uniform PDLC structures. The intensity-modulated interference field, which is generated by two linearly polarized off-resonant laser beams, is adopted to record the HGs. The fabricated HGs are electrically switchable and polarization independent. Moreover, the diffractions of the HGs fabricated using off-resonant light is better than those produced by resonant light. 出版日期： 2015-04-01 出處： Optical materials express, 2015-04, Vol.5 (4), p.774-780 資源來源： Optica Publishing Group (Optics Infobase) 識別號： ISSN: 2159-3930 識別號： EISSN: 2159-3930 識別號： DOI: 10.1364/OME.5.000774
Appears in Collections:	[Department of Optics and Photonics] journal & Dissertation

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