Anomalously Directed Amplified Spontaneous Emission from a Wedge-Shaped Cell Sandwiched by Cholesteric Liquid Crystal Films

An amplified spontaneous emission (ASE) from wedge-shaped cells of dye-doped glycerol sandwiched between two cholesteric liquid crystal films has been studied. Upon laser excitation at nearly normal incidence on a slightly wedged cell with a wedge angle of 1.2°, ASE occurs along the direction obliqu...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 43; no. 9A; p. L1220
Main Authors Nagata, Takaaki, Ohta, Takashi, Song, Myoung Hoon, Takanishi, Yoichi, Ishikawa, Ken, Watanabe, Junji, Toyooka, Takehiro, Nishimura, Suzushi, Takezoe, Hideo
Format Journal Article
LanguageEnglish
Published 15.09.2004
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Summary:An amplified spontaneous emission (ASE) from wedge-shaped cells of dye-doped glycerol sandwiched between two cholesteric liquid crystal films has been studied. Upon laser excitation at nearly normal incidence on a slightly wedged cell with a wedge angle of 1.2°, ASE occurs along the direction oblique (about 45°) to the surface normal. This effect was interpreted by increasing the incidence angle and consequent shift of a photonic band upon successive internal reflection in the wedge cell.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.43.L1220