Optically tunable random lasing from azo-dye-doped polymer dispersed liquid crystal in capillary tubes

Wang，Dong Shuo1; Chen，Mao Zhou1; Dai，Hai Tao1; Luo，Dan2; Hang，Xiao Dong1; Liu，Chang Long1

2019-10-05

10.3788/YJYXS20193410.0935

Chinese Journal of Liquid Crystals and Displays   影响因子和分区

1007-2780

Abstract: This study demonstrated the optically tunable random lasing from azo-dye-doped polymer dispersed liquid crystal (PDLC) in capillary tubes, in order to expand new applications for this device. The azo-dye-doped PDLC was prepared in glass capillaries with different core diameters- and the ran- dom lasing thresholds of these samples were measured respectively. The spectra of random lasers were measured with increasing the intensity of ultraviolet radiation. The experimental results show that the random laser threshold measurements of different core diameter capillary samples (100 jxm, 300 ;jm, 500 µm) are 11.8 µj/pulse, 8.6 µJ/pulse and 13.2 µj/pulse. The experimental results also show that as the intensity of ultraviolet radiation increases (from 0 mW/cm to 150 mW/cm), the random laser intensity decreases gradually, and the FWHM of the spectrum becomes wider. And the random lasing showed similar properties under the UV beam with different polarized directions during the optical tuning process. Our work verifies the possibility to fabricate miniature laser devices in cylindrical con- finement structures, and extends the application scope of PDLC.

Dye lasers Laser and laser optics Liquid crystals Multiple scattering

ESCI

英语

其他

National Natural Science Foundation of China[61177061][61405088][0401180018] ; Key Project of Nature Science Foundation of Tianjin[14JCZDJC31400]

Crystallography

Crystallography

WOS:000500948100001

SCIENCE PRESS

2-s2.0-85075321867

Scopus

yjyxs201910001

1.School of Science,Tianjin University,Tianjin,300072,China
2.Department of Electrical & Electronic Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Wang，Dong Shuo,Chen，Mao Zhou,Dai，Hai Tao,et al. Optically tunable random lasing from azo-dye-doped polymer dispersed liquid crystal in capillary tubes[J]. Chinese Journal of Liquid Crystals and Displays,2019,34(10):935-944.

Wang，Dong Shuo,Chen，Mao Zhou,Dai，Hai Tao,Luo，Dan,Hang，Xiao Dong,&Liu，Chang Long.(2019).Optically tunable random lasing from azo-dye-doped polymer dispersed liquid crystal in capillary tubes.Chinese Journal of Liquid Crystals and Displays,34(10),935-944.

Wang，Dong Shuo,et al."Optically tunable random lasing from azo-dye-doped polymer dispersed liquid crystal in capillary tubes".Chinese Journal of Liquid Crystals and Displays 34.10(2019):935-944.