,Hot spots enriched plasmonic nanostructure-induced random lasing of quantum dots thin film

来源 :中国物理B(英文版) | 被引量 : 0次 | 上传用户:libowen1
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Here, a plasmon-enhanced random laser was achieved by incorporating gold nanostars (NS) into disordered polymer and CdSe/ZnS quantum dots (QDs) gain medium films, in which the surface plasmon resonance of gold NS can greatly enhance the scattering cross section and bring a large gain volume. The random distribution of gold NS in the gain medium film formed a laser-mode resonator. Under a single-pulse pumping, the scattering center of gold NS-based random laser exhibits enhanced performance of a lasing threshold of 0.8 mJ/cm2 and a full width as narrow as 6 nm at half maximum. By utilizing the local enhancement characteristic of the electric field at the sharp apexes of the gold NS, the emission intensity of the random laser was increased. In addition, the gold NS showed higher thermal stability than the silver nanoparticles, withstanding high temperature heating up to 200 ?C. The results of metal nanostructures with enriched hot spots and excellent temperature stability have tremendous potential applications in the fields of biological identification, medical diagnostics, lighting, and display devices.
其他文献
Controlled aliasing in parallel imaging results in higher acceleration (CAIPIRINHA) for simultaneous multislice imaging has been proposed recently,which combine
本文以榨菜(Brassica juncea Czern. et Coss. var. tumida)‘浙桐1号’、‘浙桐3号’、‘浙桐4号’和‘种都榨菜’4个品种为材料,研究了影响榨菜离体植株再生的一些重要因素,并
In this paper,we study the effects of Pr substitution on the hydrogenating process and magnetocaloric properties of La1-xPrxFe11.4Si1.6Hy hydrides.The powder x-
We design proposals to generate remote Greenberger–Hoe–Zeilinger (GHZ) state and W state of nitrogen-vacancy (NV) centers coupled to microtoroidal resonators
The structural stability of Zn_2GeO_4 was investigated by in-situ synchrotron radiation angle dispersive x-ray diffraction. The pressure-induced amorphization i
一个阳光明媚的午后,我跟随着学校文学社的大部队,前往前后北岸,追寻苏东坡的足迹。穿过繁华的街市,漫步在古巷的青石板上,聆听着优雅的乐声,欣赏着古色古香的建筑物,一股浓厚的文化气息向我袭来。  至藤花旧馆,映入眼帘的是一座苏东坡半坐半躺的雕像。他胡须很长,一手扶膝,眼睛看向前方,似乎在沉思着什么。我想这应该是晚年时期的苏东坡吧。步入馆内,只见有一方洗砚池,洗砚池里的水呈墨青色。洗砚池旁,有一座由嶙峋
期刊