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Proceedings Paper

Temperature tuning of lasing emission from dye-doped liquid crystal at intermediate twisted phase
Author(s): Kuan-Cheng Liao; Ja-Hon Lin; Li-Hao Jian; Yao-Hui Chen; Jin-Jei Wu
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Paper Abstract

Temperature tuning of lasing emission from dye-doped cholesteric liquid crystal (CLC) at intermediate twisted phase has been demonstrated in this work. With heavily doping of 42.5% chiral molecules into the nematic liquid crystals, the shifts of photonic bandgap versus temperature is obviously as thermal controlling of the sample below the certain value. By the differential scanning calorimetr measuremet, we demonstrate the phase transition from the CLC to the smectic phase when the temperature is lowered to be about 15°C. Between CLC and smectic phase, the liquid crystal mixtures are operated at intermediate twisted phase that can be used the temperature related refractive mirror. After pump by the Q-switched Nd:YAG laser, the lasing emission from this dye doped LC mixtures has been demonstrated whose emission wavelength can be tuned from 566 to 637 nm with 1.4°C variation.

Paper Details

Date Published: 29 July 2015
PDF: 6 pages
Proc. SPIE 9659, International Conference on Photonics Solutions 2015, 965917 (29 July 2015); doi: 10.1117/12.2199078
Show Author Affiliations
Kuan-Cheng Liao, National Taipei Univ. of Technology (Taiwan)
Ja-Hon Lin, National Taipei Univ. of Technology (Taiwan)
Li-Hao Jian, National Taipei Univ. of Technology (Taiwan)
Yao-Hui Chen, National Taipei Univ. of Technology (Taiwan)
Jin-Jei Wu, National Taipei Univ. of Technology (Taiwan)


Published in SPIE Proceedings Vol. 9659:
International Conference on Photonics Solutions 2015
Surasak Chiangga; Sarun Sumriddetchkajorn, Editor(s)

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