Band-gap-tailored random laser

Hongbo Lu, Jian Xing, Cheng Wei, Jiangying Xia, Junqing Sha, Yunsheng Ding, Guobing Zhang, Kang Xie, Longzhen Qiu, Zhijia Hu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Pages (from-to)390-395
Number of pages6
JournalPhotonics Research
Issue number5
Early online date13 Feb 2018
Publication statusPublished - 18 Apr 2018

Bibliographical note

© 2018 Chinese Laser Press


Dive into the research topics of 'Band-gap-tailored random laser'. Together they form a unique fingerprint.

Cite this