Abstract

Plasmonic random lasers have been demonstrated in combining dye-doped cholesteric liquid crystals (DD-CLCs) and silver nanoparticles (AgNPs). The DD-CLC laser reveals the lowest threshold and highest slope efficiency through the localized surface plasmon resonance of AgNPs with the best coupling of the emission spectrum of lasing dye and resonance of electron oscillation on the metal surface. Thermal control of the DD-CLC lasers has been achieved to simultaneously shift the long- and short-edge lasing peaks. By the $\alpha$-stable analysis, the DD-CLC random laser (RL) reveals heavy tail distribution with relatively low $\alpha\sim 1.06$ to show the Lévy behavior. Owing to its low spatial coherence, the DD-CLC RL has been demonstrated to produce a speckle-reduced image with a lower contrast of about 0.04.

© 2020 Optical Society of America

Electrically tunable polarization of random lasing from dye-doped nematic liquid crystals

Fengfeng Yao, Rongqu Hong, Boao Zhang, Yanbo Pei, Chunfeng Hou, and Xiudong Sun
Opt. Lett. 45(22) 6118-6121 (2020)

Surface plasmon-enhanced lasing in dye-doped cholesteric liquid crystals

Cheng-Yu Shih and Hui-Chen Yeh
Opt. Express 20(18) 20698-20704 (2012)

Photoswitchable and dye-doped bubble domain texture of cholesteric liquid crystals

Andrii Varanytsia and Liang-Chy Chien
Opt. Lett. 40(19) 4392-4395 (2015)

Fiber micro-tip temperature sensor based on cholesteric liquid crystal

Jianyang Hu, Dong Zhou, Yueming Su, Shuangqiang Liu, Peixian Miao, Yanchao Shi, Weimin Sun, and Yongjun Liu
Opt. Lett. 45(18) 5209-5212 (2020)

Configuration dependent output characteristics with Fabry–Perot and random lasers from dye-doped liquid crystals within glass cells

Ja-Hon Lin, Yi-Han Li, Sheng-Hung Lin, and Bich-Hanh Nguyen
Photon. Res. 6(5) 403-408 (2018)