15 October 2004 Lasing characteristics of a dye-doped nematic liquid crystal layer sandwiched by two polymeric cholesteric liquid crystals
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Abstract
We have studied the lasing characteristics from a dye-doped nematic layer sandwiched by two polymeric cholesteric liquid crystal (PCLC) films as photonic band gap materials. The nematic layer possessing birefringence brings about the following remarkable optical characteristics; (1) reflectance in the photonic band gap (PBG) region exceeds 50% due to the retardation effect, being unpredictable from a single CLC film, (2) efficient lasing occurs either at the notch of PBG or at the photonic band edge, (3) the lasing emisions contain both right- and left-circular polarizations, and (4) tunable lasing can be achieved by the reorientation of nematic liquid crystal molecule under the application of an electric field.
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Myoung Hoon Song, Myoung Hoon Song, Byoungchoo Park, Byoungchoo Park, Ki-Chul Shin, Ki-Chul Shin, Takashi Ohta, Takashi Ohta, Yuko Tsunoda, Yuko Tsunoda, Hajime Hoshi, Hajime Hoshi, Yoichi Takanishi, Yoichi Takanishi, Ken Ishikawa, Ken Ishikawa, Junji Watanabe, Junji Watanabe, Suzushi Nishimura, Suzushi Nishimura, Takehiro Toyooka, Takehiro Toyooka, Zhengguo Zhu, Zhengguo Zhu, Timothy M. Swager, Timothy M. Swager, Hideo Takezoe, Hideo Takezoe, } "Lasing characteristics of a dye-doped nematic liquid crystal layer sandwiched by two polymeric cholesteric liquid crystals", Proc. SPIE 5518, Liquid Crystals VIII, (15 October 2004); doi: 10.1117/12.562626; https://doi.org/10.1117/12.562626
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