3D microlasers from self-assembled cholesteric liquid-crystal microdroplets
3D microlasers from self-assembled cholesteric liquid-crystal microdroplets
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DOI：
10.1364/oe.18.026995
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发表时间：
2010-12-20
期刊：
影响因子：
3.8
通讯作者：
Musevic, I.
中科院分区：
文献类型：
--
作者：
Humar, M.;Musevic, I.
我们展示了一个可调谐和全向微激光器的形式的染料掺杂的微滴，在载液中的液晶。该晶体形成了一个布拉格洋葱光学微腔，全方位的3D激光是由于液晶中染料分子的受激光发射。激射波长仅取决于晶体的自然螺旋周期，并且可以通过改变温度来调谐。通过混合液晶、激光染料和载液，可以简单地形成数百万个微激光器，从而为软物质光子器件提供微激光器。(C)2010年美国光学学会
We demonstrate a tunable and omnidirectional microlaser in the form of a microdroplet of a dye-doped, cholesteric liquid crystal in a carrier fluid. The cholesteric forms a Bragg-onion optical microcavity and the omnidirectional 3D lasing is due to the stimulated emission of light from the dye molecules in the liquid crystal. The lasing wavelength depends solely on the natural helical period of the cholesteric and can be tuned by varying the temperature. Millions of microlasers can be formed simply by mixing a liquid crystal, a laser dye and a carrier fluid, thus providing microlasers for soft-matter photonic devices. (C) 2010 Optical Society of America