Lasing in cholesteric liquid crystal cells: Competition of Bragg and leaky modes

被引：26

作者：

Blinov, Lev M. ^{[1
]}

Cipparrone, Gabriella

Mazzulla, Alfredo

Pagliusi, Pasquale

Lazarev, Vladimir V.

机构：

[1] Univ Calabria, Dept Phys, CNR, Licryl INFM, I-87046 Arcavacata Di Rende, CS, Italy

[2] Russian Acad Sci, Inst Crystallog, Moscow 119333, Russia

来源：

JOURNAL OF APPLIED PHYSICS | 2007年 / 101卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1063/1.2437104

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Measurements of the angular dependency of luminescence and lasing spectra were carried out for a planar layer of a dye-doped cholesteric liquid crystal (CLC). In addition to the known Bragg emission mode propagating along the cell normal, we observed that leaky modes also depend on the pump intensity and on the dimension and shape of the transverse cross section of the excitation beam. The leaky modes are valuable as a specific lasing regime but impose serious limitation on the energy of the Bragg lasing modes. This has to be taken into consideration when designing high energy lasing devices based on CLC. (c) 2007 American Institute of Physics.

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