Temporally Stable and Continuously Tunable Laser Device Fabricated Using Polymerized Cholesteric Liquid Crystals

被引：13

作者：

Jeong, Mi-Yun ^{[1
,2
]}

Wu, Jeong Weon ^{[1
,2
,3
,4
]}

机构：

[1] Gyeongsang Natl Univ, Dept Phys, Jinju 660701, Gyeongnam, South Korea

[2] Gyeongsang Natl Univ, Res Inst Nat Sci, Jinju 660701, Gyeongnam, South Korea

[3] Ewha Womans Univ, Dept Phys, Seoul 120750, South Korea

[4] Ewha Womans Univ, Quantum Metamat Res Ctr, Seoul 120750, South Korea

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2012年 / 51卷 / 08期

基金：

新加坡国家研究基金会;

关键词：

PHOTONIC CRYSTALS; BRAGG REFLECTORS; BAND-GAP; TEMPERATURE; RESONATOR; RADIATION; EMISSIONS; RANGE; LAYER;

D O I：

10.1143/JJAP.51.082702

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We realized the fabrication of a temporally stabilized continuously tunable laser device using a UV-curable polymerized dye-doped cholesteric liquid crystal wedge cell. The spatial tuning resolution was less than 1 nm over a 70 nm spectral range. The continuous tuning behavior of the polymerized wedge cholesteric liquid crystal (CLC) cell is due to the fact that the concentration of the pitch gradient matches the helical pitch determined by the cell thickness. After about 1 year had elapsed, the spectral range of continuous laser tuning was nearly maintained in the polymerized CLC wedge cells. This scheme raises the possibility of practical applications of the CLC laser device, which allows for a wide tunability of single-mode laser emissions. (C) 2012 The Japan Society of Applied Physics

引用

页数：5

共 31 条

[1] Low threshold DFB lasing in chiral LC at diffraction of pumping wave [J].