Plasmonic random aser from dye-doped cholesteric liquid crystals incorporating silver nanoprisms

被引：10

作者：

Chang, Shu-Han ^{[1
]}

Wu, Jin-Jei ^{[1
]}

Kuo, Chi-Ching ^{[2
]}

Tsay, Shwu-Yun ^{[1
]}

Chen, Yao-Hui ^{[1
]}

Lin, Ja-Hon ^{[1
]}

机构：

[1] Natl Taipei Univ Technol, Dept Electroopt Engn, Taipei 10608, Taiwan

[2] Natl Taipei Univ Technol, Inst Organ & Polymer Mat, Res & Dev Ctr Smart Text Technol, Taipei 10608, Taiwan

来源：

OPTICS LETTERS | 2020年 / 45卷 / 18期

关键词：

RANDOM LASERS; EMISSION;

D O I：

10.1364/OL.398793

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 a-stable analysis, the DD-CLC random laser (RL) reveals heavy tail distribution with relatively low alpha similar to 1.06 to show the Levy 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. (C) 2020 Optical Society of America

引用

页码：5144 / 5147

页数：4

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