Thermally and optically tunable lasing properties from dye-doped holographic polymer dispersed liquid crystal in capillaries

In this paper, we investigated tunable lasing properties from the dye-doped holographic polymer dispersed liquid crystal (HPDLC) gratings in capillaries with thermal and optical manners. The thermally tunable range of the lasing from the dye-doped HPDLC reached 8.60 nm with the temperature ranging f...

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Bibliographic Details
Published in:Journal of applied physics 2018-03, Vol.123 (10)
Main Authors: Chen, Maozhou, Dai, Haitao, Wang, Dongshuo, Yang, Yue, Luo, Dan, Zhang, Xiaodong, Liu, Changlong
Format: Article
Language:English
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Summary:In this paper, we investigated tunable lasing properties from the dye-doped holographic polymer dispersed liquid crystal (HPDLC) gratings in capillaries with thermal and optical manners. The thermally tunable range of the lasing from the dye-doped HPDLC reached 8.60 nm with the temperature ranging from 23 °C to 50 °C. The optically tunable laser emission was achieved by doping azo-dye in HPDLC. The transition of azo-dye from trans- to cis-state could induce the reorientation of LC molecules after UV light irradiation, which resulted in the variation of refractive index contrast of LC-rich/polymer-rich layer in HPDLC. Experimentally, the emission wavelength of lasing showed a blueshift (about 2 nm) coupled with decreasing output intensities. The tunable laser based on HPDLC may enable more applications in laser displays, optical communication, biosensors, etc.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.5020765