材料科学
光学
激光器
胆甾液晶
激光阈值
液晶
波长
光电子学
染料激光器
栅栏
物理
作者
Y. Inoue,Hiroshi Moritake
出处
期刊:Optics Letters
[Optica Publishing Group]
日期:2022-02-01
卷期号:47 (6): 1303-1303
被引量:2
摘要
A cholesteric liquid-crystal gel (ChLCG) is fabricated by photopolymerizing a ChLC doped with a mesogenic monomer at a high concentration of 38.2 wt%. The reflection band of the ChLCG exhibits a fast, continuous, and time-varying wavelength shift of the order of kilohertz by applying a sine wave voltage. Swept lasing at a swept rate of 100 Hz and with a swept range of 12 nm can be achieved by irradiating a dye-doped ChLCG with a quasi-continuous-wave laser. When the swept laser light is introduced to a diffracting grating, a laser scanning device is demonstrated.
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