3 February 2009 Multi-wavelength cholesteric liquid crystal laser
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Multi-wavelength lasing in a dye-doped cholesteric liquid crystal (CLC) cell is demonstrated. By adding oversaturated chiral dopant, the multi-photonic band CLC structure can be obtained with non-uniform chiral solubility. Under appropriate excitation, multi-wavelength lasing can be achieved with a multi-photonic band edge CLC structure. The number of lasings can be controlled under various temperature processes. Nine wavelength CLC lasings were observed simultaneously. The wavelength range covers around 600-675nm.
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Chun-Ta Wang, Chun-Ta Wang, Tsung-Hsien Lin, Tsung-Hsien Lin, } "Multi-wavelength cholesteric liquid crystal laser", Proc. SPIE 7232, Emerging Liquid Crystal Technologies IV, 72320L (3 February 2009); doi: 10.1117/12.807888; https://doi.org/10.1117/12.807888

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