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- Song, Myoung Hoon
- Organic Photonics & Optoelectronics Lab.
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Lasing characteristics of a dye-doped nematic liquid crystal layer sandwiched by two polymeric cholesteric liquid crystals
- Author(s)
- Song, Myoung Hoon, Park, B, Shin, KC, Ohta, T, Tsunoda, Y, Hoshi, H, Takanishi, Y, Ishikawa, K, Watanabe, J, Nishimura, S, Toyooka, T, Zhu, ZG, Swager, TM, Takezoe, H
- Issued Date
- 2004
- Citation
- Proceedings of SPIE - The International Society for Optical Engineering, v.5518, pp.66 - 76
- 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 emissions contain both right- and left-circular polarizations, and (4) tunable lasing can be achieved by the reorientation of nematic liquid crystal molecules under the application of an electric field.
- Publisher
- SPIE
- ISSN
- 0277-786X
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