29 July 2015 Temperature tuning of lasing emission from dye-doped liquid crystal at intermediate twisted phase
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Proceedings Volume 9659, International Conference on Photonics Solutions 2015; 965917 (2015) https://doi.org/10.1117/12.2199078
Event: International Conference on Photonics Solutions 2015, 2015, Hua Hin, Thailand
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.
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Kuan-Cheng Liao, Kuan-Cheng Liao, Ja-Hon Lin, Ja-Hon Lin, Li-Hao Jian, Li-Hao Jian, Yao-Hui Chen, Yao-Hui Chen, Jin-Jei Wu, Jin-Jei Wu, } "Temperature tuning of lasing emission from dye-doped liquid crystal at intermediate twisted phase", Proc. SPIE 9659, International Conference on Photonics Solutions 2015, 965917 (29 July 2015); doi: 10.1117/12.2199078; https://doi.org/10.1117/12.2199078
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