Phototunable photonic bandgap in a chiral liquid crystal laser device

Seiichi Furumi; Shiyoshi Yokoyama; Akira Otomo; Shinro Mashiko

doi:10.1063/1.1699445

Phototunable photonic bandgap in a chiral liquid crystal laser device

Seiichi Furumi, Shiyoshi Yokoyama, Akira Otomo, Shinro Mashiko

Research output: Contribution to journal › Article › peer-review

137 Citations (Scopus)

Abstract

The phototunable photonic bandgap (PBG) of photosensitive cholesteric liquid crystal (CLC) doped with fluorescent dye to generate laser feedback effect was discussed. It was observed that during the exposure of dye-doped CLC cell to UV light at 254 nm, continuous changes in the chiral PBG were found due to the photolysis reaction of cholestryl iodide embedded in the CLC host. It was also observed that the laser oscillation was tunable by the photocontrolled PBG of CLC host, and was stable at room temperature. Results show that laser oscillation is controlled in a wide wavelength range from 610 to 700 nm by photoassisted adjustment of CLC photonic bandgaps.

Original language	English
Pages (from-to)	2491-2493
Number of pages	3
Journal	Applied Physics Letters
Volume	84
Issue number	14
DOIs	https://doi.org/10.1063/1.1699445
Publication status	Published - Apr 5 2004
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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abstract = "The phototunable photonic bandgap (PBG) of photosensitive cholesteric liquid crystal (CLC) doped with fluorescent dye to generate laser feedback effect was discussed. It was observed that during the exposure of dye-doped CLC cell to UV light at 254 nm, continuous changes in the chiral PBG were found due to the photolysis reaction of cholestryl iodide embedded in the CLC host. It was also observed that the laser oscillation was tunable by the photocontrolled PBG of CLC host, and was stable at room temperature. Results show that laser oscillation is controlled in a wide wavelength range from 610 to 700 nm by photoassisted adjustment of CLC photonic bandgaps.",

author = "Seiichi Furumi and Shiyoshi Yokoyama and Akira Otomo and Shinro Mashiko",

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AU - Yokoyama, Shiyoshi

AU - Otomo, Akira

AU - Mashiko, Shinro

PY - 2004/4/5

Y1 - 2004/4/5

N2 - The phototunable photonic bandgap (PBG) of photosensitive cholesteric liquid crystal (CLC) doped with fluorescent dye to generate laser feedback effect was discussed. It was observed that during the exposure of dye-doped CLC cell to UV light at 254 nm, continuous changes in the chiral PBG were found due to the photolysis reaction of cholestryl iodide embedded in the CLC host. It was also observed that the laser oscillation was tunable by the photocontrolled PBG of CLC host, and was stable at room temperature. Results show that laser oscillation is controlled in a wide wavelength range from 610 to 700 nm by photoassisted adjustment of CLC photonic bandgaps.

AB - The phototunable photonic bandgap (PBG) of photosensitive cholesteric liquid crystal (CLC) doped with fluorescent dye to generate laser feedback effect was discussed. It was observed that during the exposure of dye-doped CLC cell to UV light at 254 nm, continuous changes in the chiral PBG were found due to the photolysis reaction of cholestryl iodide embedded in the CLC host. It was also observed that the laser oscillation was tunable by the photocontrolled PBG of CLC host, and was stable at room temperature. Results show that laser oscillation is controlled in a wide wavelength range from 610 to 700 nm by photoassisted adjustment of CLC photonic bandgaps.

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Phototunable photonic bandgap in a chiral liquid crystal laser device

Abstract

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