Band-gap-tailored random laser  

作　　者：HONGBO Lu JIAN XING CHENG WEI JIANGYING XIA JUNQING SHA YUNSHENG DING GUOBING ZHANG KANG XIE LONGZHEN QIU ZHIJIA Hu 

机构地区：[1]Key Laboratory of Special Display Technology,Ministry of Education,National Engineering Laboratory of Special Display Technology,State Key Laboratory of Advanced Display Technology,Academy of Opto-Electronic Technology,Hefei University of Technology,Hefei 230009,China [2]Key Laboratory of Advanced Functional Materiels and Devices of Anhui Province,School of Chemistry and Chemical Engineering,Hefei University of Technology,Hefei 230009,China [3]School of Instrument Science and Opto-Electronics Engineering,Hefei University of Technology,Hefei 230009,China [4]Aston Institute of Photonic Technologies,Aston University,Birmingham B4 7ET,UK

出　　处：《Photonics Research》2018年第5期390-395,共6页光子学研究（英文版）

基　　金：Natural Science Foundation of Anhui Province,China(1708085MF150);National Natural Science Foundation of China(NSFC)(61107014,51573036,11404087,11574070);China Postdoctoral Science Foundation(2015M571918,2017T100442);H2020 Marie Sklodowska-Curie Actions(MSCA)(744817);Fundamental Research Funds for the Central Universities,China(JD2017JGPY0006,JZ2017HGTB0187,PA2017GDQT0024)

摘　　要：A band-gap-tailored random laser with a wide tunable range and low threshold through infrared radiation is demonstrated. When fluorescent dyes are doped into the liquid crystal and heavily doped chiral agent system,we demonstrate a wavelength tuning random laser instead of a side-band laser, which is caused by the combined effect of multi-scattering of liquid crystal(LC) and band-gap control. Through rotating the infrared absorbing material on the side of the LC cell, an adjustable range for random lasing of 80 nm by infrared light irradiation was observed.A band-gap-tailored random laser with a wide tunable range and low threshold through infrared radiation is demonstrated. When fluorescent dyes are doped into the liquid crystal and heavily doped chiral agent system, we demonstrate a wavelength tuning random laser instead of a side-band laser, which is caused by the combined effect of multi-scattering of liquid crystal （LC） and band-gap control. Through rotating the infrared absorbing material on the side of the LC cell, an adjustable range for random lasing of 80 nm by infrared light irradiation was observed.

关 键 词：LENGTH LC Band-gap-tailored random laser 

分 类 号：TN1[电子电信—物理电子学]