期刊
PHOTONICS RESEARCH
卷 6, 期 11, 页码 1028-1032出版社
OPTICAL SOC AMER
DOI: 10.1364/PRJ.6.001028
关键词
-
类别
资金
- National Natural Science Foundation of China (NSFC) [51572120, 61504064]
- Natural Science Foundation of Jiangsu Province [BK20150847, BK20161521, BK20170912]
- Nanjing University of Posts and Telecommunications (NUPT) [NY217129, NY218023]
Low-dimensional nanomaterials, owing to their unique and versatile properties, are very attractive for enormous electronic and optoelectronic applications. PbS quantum dots (QDs), characterized by a large Bohr radius and size-tunable bandgap, are especially interesting for photonic applications in the near-infrared region. Here, oleic acid capped colloidal PbS QDs as a saturable absorber are investigated for ultrashort-pulse generation. The PbS QDs exhibit outstanding nonlinear saturable absorption properties at 1550 nm: a modulation depth up to 44.5% and a thermal damage threshold larger than 30 mJ/cm(2). By incorporating PbS QDs into a fiber laser, a transform-limited soliton pulse as short as 559 fs with a bandwidth of 4.78 nm is realized at 1563 nm. Numerous applications may benefit from the nonlinear saturable absorption properties of PbS QDs, such as near-infrared pulsed lasers and modulators. (C) 2018 Chinese Laser Press
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据