Open AccessTunable capability of dye-doped cholesteric liquid crystal lasers
Author(s) -
Yongjun Liu,
Feiru Wang,
Weimin Sun,
Xiaoqi Liu,
Lingli Zhang
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.076101
Subject(s) - lasing threshold , materials science , cholesteric liquid crystal , laser , electric field , optoelectronics , liquid crystal , wavelength , refractive index , doping , dye laser , optics , crystal (programming language) , physics , quantum mechanics , computer science , programming language
Based on the fact that helical pitch and average refractive index of a cholesteric liquid crystal is electric-tunable and temperature-tunable, we have designed dye-doped cholesteric liquid crystal (CLC) lasers. First, the effects of the concentration of chiral and the temperature on helical pitch are investigated. Next, we gain the relationship of tunable laser with temperature and electric field. When the temperature is changed from 23 to 35℃, the wavelength shift of the lasing peak vasies from 618.90 to 594.76 nm, nearly 24.14 nm in total; when the electric field is changed from 0 to 9 V, the wavelength shift of the lasing peak ehanges from 617.40 to 608.11 nm, nearly 9.29 nm in total.