Lasing from Thick Anisotropic Layer Sandwiched between Polymeric Cholesteric Liquid Crystal Films
Lasing from Thick Anisotropic Layer Sandwiched between Polymeric Cholesteric Liquid Crystal Films
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DOI：
10.1143/jjap.44.8165
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发表时间：
2005-11
影响因子：
1.5
通讯作者：
M. Song;Byoungchoo Park;Y. Takanishi;K. Ishikawa;S. Nishimura;T. Toyooka;H. Takezoe
中科院分区：
文献类型：
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作者：
M. Song;Byoungchoo Park;Y. Takanishi;K. Ishikawa;S. Nishimura;T. Toyooka;H. Takezoe
我们已经在夹在两个聚合物胆甾型液晶薄膜之间的染料掺杂 100 µm 厚向列液晶层中展示了一种新型激光模式，充当光子晶体。除了源自法布里-珀罗腔模式的细条纹外，所制造的电池在透射率光谱中还表现出几个特征性的下降。这些下降是由于双折射介质中光学本征模式之间的相位延迟造成的，而这在各向同性层中是无法实现的。当向列层掺杂染料时，该电池在与阻带区域内的透射率最大值相对应的波长处显示多模激光。
We have demonstrated a new type of lasing mode in a dye-doped 100-µm-thick nematic liquid crystal layer sandwiched between two polymeric cholesteric liquid crystal films functioning as a photonic crystal. The fabricated cell exhibits several characteristic dips in the transmittance spectrum in addition to fine fringes originating from a Fabry–Perot cavity mode. These dips are due to the phase retardation between optical eigenmodes in the birefringent medium, which is not realized in an isotropic layer. The cell shows multimode lasing at wavelengths corresponding to transmittance maxima within the stopband region when the nematic layer is doped with dyes.