CdSSe纳米带的共振调制放大发射。

Resonance modulated amplified emission from CdSSe nanoribbons.

作者信息

Wood T, Cheung K T, Foo Y, Liu Y K, Zapien J A

机构信息

Department of Physics and Materials Science and Centre of Super Diamond and Advanced Films (COSDAF), City University of Hong Kong, Hong Kong.

Yunnan Normal University, Kunming, China.

出版信息

Sci Rep. 2015 Oct 16;5:15071. doi: 10.1038/srep15071.

DOI:10.1038/srep15071

PMID:26472435

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4608008/

Abstract

We present evidence of amplified emission mediated by surface plasmon polaritons (SPPs) from a CdS0.2Se0.8 nanoribbon (NR) supported on a gold-coated silicon substrate. Room temperature amplified emission is observed from the nanoribbon above excitation irradiances ~ 25 W/cm(2) when it is supported on the gold coated silicon substrate. The nanoribbon is shown to act as a resonator cavity, leading to amplification of discrete wavelengths in the emission spectrum. Evidence for the formation of SPP waves between the gold-coated substrate and the nanoribbon is shown, and the resulting wavenumber increase allows for the matching of theoretical resonance wavelengths with those observed experimentally.

摘要

我们展示了由支撑在镀金硅衬底上的CdS0.2Se0.8纳米带（NR）中的表面等离激元极化激元（SPP）介导的放大发射证据。当纳米带支撑在镀金硅衬底上时，在激发辐照度约为25 W/cm²以上可观察到室温下的放大发射。纳米带表现为一个谐振腔，导致发射光谱中离散波长的放大。展示了在镀金衬底和纳米带之间形成SPP波的证据，并且由此产生的波数增加使得理论共振波长与实验观察到的波长相匹配。