한국광학회:학술대회논문집 (Proceedings of the Optical Society of Korea Conference)
- 한국광학회 2003년도 하계학술발표회
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- Pages.164-165
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- 2003
롤레스테릭 액정의 광결정 가장자리에서의 펨토초 비선형 광학 이동
Femtosecond nonlinear optical shift in photonic bandgapedges of a cholesteric liquid crystal
- Jisoo Hwang (Department of Physics, Ewha Womans University) ;
- N. Y. Ha (Department of Physics, Ewha Womans University) ;
- H. J. Chang (Department of Physics, Ewha Womans University) ;
- Park, Byoungchoo (Quautum Photonic Science Research Center ＆ Department of Physics, Hanyang University) ;
- J. W. Wu (Department of Physics, Ewha Womans University)
- 발행 : 2003.07.01
초록
A cholesteric liquid crystal (CLC) system exhibits one-dimensional (1-D) Photonic bandgap (PBG) characteristics in the transmission spectrum through a selective Bragg reflection. Related to the nonlinear optical (NLO) processes in a PBG structure of CLC, the inherent periodicity has been exploited to Phase-match the fundamental and the harmonic waves through the umklapp Processes. Near bandgap edges of a CLC, harmonic generations have been shown to be enhanced significantly through the field localization. (omitted)
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