Distributed feedback leaky laser emission from dye doped gel-glass dispersed liquid crystal thin film patterned by soft lithography
Distributed feedback leaky laser emission from dye doped gel-glass dispersed liquid crystal thin film patterned by soft lithography
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软光刻图案化染料掺杂凝胶玻璃分散液晶薄膜的分布式反馈漏激光发射
DOI：
10.1016/j.optmat.2011.08.004
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发表时间：
2011-11
影响因子：
3.9
通讯作者：
中科院分区：
文献类型：
--
作者：
以正硅酸乙酯（TEOS）和乙基三乙氧基硅烷（ETES）为原料，采用溶胶-凝胶法制备了有机激光染料罗丹明6 G（R6 G）掺杂的凝胶玻璃分散液晶（GDLC）薄膜。通过扫描电子显微镜（SEM）表征，采用软光刻技术在低折射率GDLC薄膜上成功地形成了表面浮雕结构，支持基于漏模传播的分布反馈（DFB）激光发射。研究了DFB激光器的发射特性，发现发射光谱的窄化和精细结构的图形由液晶4-氰基-4 ′-戊基联苯（5CB）的掺杂浓度控制。我们还展示了在同一个GDLC漏波导中，DFB激光与由光散射介导的随机激光的同步激发。
Gel-glass dispersed liquid crystal (GDLC) thin films doped with organic laser dye Rhodamine 6G (R6G) were prepared via a sol–gel procedure of tetraethyl orthosilicate (TEOS) and ethyl triethoxisilane (ETES). As characterized by scanning electronic microscope (SEM), surface-relief structures were successfully patterned on lower refractive index GDLC thin films by soft lithographic technology, which support distributed feedback (DFB) laser emission based on leaky mode propagation. The performance of the DFB laser emission was investigated and the spectral narrowing of the emitted radiation and the fine structure pattern were found to be controlled by the doping concentration of liquid crystal (LC) 4-cyano-4′-pentylbiphenyl (5CB). We also showed the synchronous excitation of a DFB lasing with random lasing mediated by light scattering inside the same GDLC leaky waveguide.
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DOI：
10.1016/j.mseb.2010.04.002
发表时间：
2010-08
影响因子：
3.6
作者：
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DOI：
10.1016/0584-8539(96)01725-4
发表时间：
1996-11
期刊：
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
影响因子：
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作者：
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影响因子：
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