Development of highly fluorescent red dyes for cholesteric liquid crystal lasers

Summary: We developed high-efficiency red fluorescent dyes for opt-electronic devices and applied them to cholesteric liquid crystal laser experiments. Dyes with the methoxy group showed similar steady state absorption and fluorescence dichroic ratios to those with the methyl group. Laser oscillatio...

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Bibliographic Details
Published inProceedings of Japanese Liquid Crystal Society Annual meeting p. 2C03
Main Authors Ichimura, Mari, Ishikawa, Ken
Format Journal Article
LanguageJapanese
Published THE JAPANESE LIQUID CRYSTAL SOCIETY 2019
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Summary:Summary: We developed high-efficiency red fluorescent dyes for opt-electronic devices and applied them to cholesteric liquid crystal laser experiments. Dyes with the methoxy group showed similar steady state absorption and fluorescence dichroic ratios to those with the methyl group. Laser oscillation occurred at both ends of the selective reflection band in the former, but occurred only at the long-wavelength edge in the latter. To clarify the origin of different lasing behavior, we performed transient polarized fluorescent measurements. We found a difference in the relaxation process between the two groups. We explain the difference of lasing behavior based on the difference in the relaxation process.
Bibliography:2C03
ISSN:1880-3490
2432-5988
DOI:10.11538/ekitou.2019.0_2C03