文档介绍：
Highly performance plasmonic random lasing based on
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nanogaps in bimetallic porous nanowires#
Shi Xiaoyu1, Wang Yanrong1, Sun Yanyan1, Liu Dahe2, Jing Zhou1, Jinwei Shi1,
Wang Zhaona1**
(1. Applied Optics Beijing Area Major Laboratory, Department of Physics, Beijing Normal
University, Beijing 100875;
2. Laboratory of Nondestructive Test (Ministry of Education), Nanchang Hang Kong
University, NanChang 330063)
Abstract: A plasmonic random laser is achieved using gold-silver bimetallic porous nanowires with
abundant nanogaps which provide strong feedback or gain channels for coherent lasing from dye
molecules. The strong confinement of nanogaps allows the bimetallic porous nanowire-based random
laser pumped by ns pulse to operate well with a very low threshold and extremely low concentration of
Rhodamine 6G (as low as mM). And such random lasing can be used as pumping source of
another coherent random laser with oxizine. These results open the door to studies of coherent random
lasing pumped by another random laser.
Keywords: Surface plasmon resonance; bimetallic porous nanowire; stimulated emission; coherent
random laser; random laser pump
0 Introduction
Random lasers have attracted significant attentions in recent -4 There are two
mechanisms for random lasers: coherent feedback and incoherent feedback. C