Laser Emission from a Photopolymerized Cholesteric Blue Phase II

Takuya Isomura Department of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Suita, Osaka, Japan

Hiroyuki Yoshida Department of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Suita, Osaka, JapanCorrespondence[email protected]

Akihiko Fujii Department of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Suita, Osaka, Japan

Masanori Ozaki Department of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University, Suita, Osaka, Japan

Abstract

The authors report the preparation of a free-standing film of the cholesteric blue phase II by photopolymerization, and investigate its fluorescence characteristics upon optically pumping the sample. Before polymerization, laser emission was observed from the long band-edge wavelength of the selective reflection band of the blue phase. After polymerization, laser emission was not observed from the band-edge wavelength, but appeared to have red-shifted possibly due to a distortion of the helix.

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Laser Emission from a Photopolymerized Cholesteric Blue Phase II

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Laser Emission from a Photopolymerized Cholesteric Blue Phase II

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