NDLI: Optically switchable biphotonic gratings based on dye-doped cholesteric liquid crystal films

Content Provider	Semantic Scholar
Author	Yeh, Hui-Chen Chen, Guanghao Lee, Chia-Rong Mo, Ting-Shan
Copyright Year	2007
Abstract	This study elucidates optically switchable gratings (BGs) based on biphotonic effect in dye-doped cholesteric liquid crystal films. When one circularly polarized green beam is switched on (off), the gratings can be turned on (off) by illumination with an interference field generated by two linearly polarized red beams. The biphotonic gratings are formed by two mechanisms—green-beam-induced dye reorientation through trans-cis isomerization and red-beam-induced suppression of dye reorientation by cis-trans back isomerization. These mechanisms result in a spatially periodic distribution with homeotropiclike and planarlike structures, respectively, in dark and bright regions of the interference field, generating the BGs.
Starting Page	261103
Ending Page	261103
Page Count	1
File Format	PDF HTM / HTML
DOI	10.1063/1.2752110
Volume Number	90
Alternate Webpage(s)	http://ir.lib.ncku.edu.tw/bitstream/987654321/90129/2/2010500701004.pdf
Alternate Webpage(s)	https://doi.org/10.1063/1.2752110
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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