文献类型：期刊文献

英文题名：Low-voltage-modulated laser based on dye-doped polymer stabilized cholesteric liquid crystal

作者：Liu, Bo-wei[1];Zheng, Zhi-gang[1,2,3];Chen, Xu-chang[1];Shen, Dong[1]

机构：[1]E China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China;[2]Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China;[3]Nanjing Univ, Coll Engn & Appl Sci, Nanjing 210093, Jiangsu, Peoples R China

年份：2013

卷号：3

期号：4

起止页码：519

外文期刊名：OPTICAL MATERIALS EXPRESS

收录：;EI(收录号：20131916319928);WOS:【SCI-EXPANDED(收录号:WOS:000316866600013)】；

基金：This work is sponsored by the Chen-guang Talent Foundation of Shanghai Education and Development Committee (No. 12CG32), the National Science Foundation of China (No. 61108065) and the National Innovative Experiment Project for College Students (No. 111025154).

语种：英文

外文关键词：Optical Kerr effect - Light sources - Photonic band gap - Light - Monomers - Energy gap - Nematic liquid crystals

摘要：An electrically-modulated laser was fabricated based on cholesteric liquid crystal photonic band gap. To lower the modulation voltage, the nematic liquid crystals with high dielectric constant was selected, and thus, the emission energy can be modulated with a voltage of less than 10 V. Polymer stabilization was carried out to obtain a stable and switchable helical liquid crystal system. It is noteworthy that visible light initiation system was adopted to prevent the deformation of photonic band gap. The monomer concentration effects on lasing performances were studied and discussed. The results indicate that the laser emission threshold is decreased and the response time is shortened with the increasing of monomer, while the hysteresis may be enhanced. This study provides some new insights into the fabrication, materials improvements and performances of dye-doped liquid crystal laser, and such electrically modulated laser will be a prospective candidate in the laser displays, micro-light-source or the other optical systems. (C) 2013 Optical Society of America