Toward practical application of cholesteric liquid crystals to tunable lasers
Toward practical application of cholesteric liquid crystals to tunable lasers
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DOI：
10.1039/b802461h
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发表时间：
2008-01-01
影响因子：
--
通讯作者：
Takezoe, Hideo
中科院分区：
文献类型：
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作者：
Manabe, Takanobu;Sonoyama, Koji;Takezoe, Hideo
为了实现胆甾液晶（CLCs）在光子可调谐激光器件中的实际应用，人们做了两方面的努力：(1)光聚合和(2)利用三次谐波产生（THG）激发。所提出的系统是基于CLCs的空间光学-节距梯度和掺杂两种具有浓度梯度的有机染料（福斯特偶）。在410 nm的光参量振荡器激发下，我们获得了覆盖整个可见光区域（从480 nm到670 nm）的位置敏感激光发射。使用更传统的泵浦源（Nd:YAG激光器的THG）的初步数据也被报道。
To realize practical application of cholesteric liquid crystals (CLCs) to photonic tunable laser devices, two efforts have been made: (1) photopolymerization and (2) use of third-harmonic generation (THG) for excitation. The proposed system is based on a spatial optical-pitch gradient in CLCs and doping of two organic dyes (Forster couple) with a concentration gradient. We obtained position-sensitive laser emissions covering the whole visible region (from 480 nm to 670 nm) in photopolymerized CLC films under excitation at 410 nm by an optical parametric oscillator. Preliminary data using more conventional pumping source (THG of a Nd:YAG laser) are also reported.