Low-threshold supercontinuum generation in semiconductor nanoribbons by continuous-wave pumping

被引：19
作者：
Gu, Fuxing [1 ]
Yu, Huakang [1 ]
Fang, Wei [1 ]
Tong, Limin [1 ]
机构：
[1] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Dept Opt Engn, Hangzhou 310027, Zhejiang, Peoples R China
来源：
OPTICS EXPRESS | 2012年 / 20卷 / 08期
基金：
中国国家自然科学基金;
关键词：
SUBWAVELENGTH-DIAMETER SILICA; STIMULATED RAMAN-SCATTERING; NONLINEAR OPTICS; CDS; GUIDE; PHOTOLUMINESCENCE; DISPERSION; NANOWIRES; EMISSION; FIBERS;
D O I：
10.1364/OE.20.008667
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the first observation of supercontinuum (SC) generation in single semiconductor nanoribbons (NRs). By launching a continuous wave (CW) 532-nm pump light along a 200-mu m-length CdS NR for waveguiding excitation, SC generation is realized with a threshold down to sub-milliwatt level, which is similar to 3 orders lower compared with previous CW-pumped SC generated in glass fibers. The low threshold is benefitted from the favorable material properties and waveguide geometries including high Raman gains, strong light confinement, more optical guided modes and phonon modes. Our work paves the way to low-threshold nanoscale SC sources and may find widespread applications ranging from spectroscopic analysis and biological imaging to material research. (C) 2012 Optical Society of America
引用
收藏
页码：8667 / 8674
页数：8
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