Premium
Solvothermal Synthesis and Ultrafast Photonics of Black Phosphorus Quantum Dots
Author(s) -
Xu Yanhua,
Wang Zhiteng,
Guo Zhinan,
Huang Hao,
Xiao Quanlan,
Zhang Han,
Yu XueFeng
Publication year - 2016
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201600214
Subject(s) - materials science , ultrashort pulse , nanomaterials , photonics , saturable absorption , black phosphorus , quantum dot , optoelectronics , laser , wavelength , optics , fiber laser , nanotechnology , physics
Ultrasmall black phosphorus quantum dots (BPQDs) with an average size of 2.1 ± 0.9 nm are synthesized by using a solvothermal method in a N ‐methyl‐2‐pyrrolidone solution. Verified by femto‐second laser Z‐scan measurement, BPQDs exhibit excellent nonlinear optical response with a modulation depth of about 36% and a saturable intensity of about 3.3 GW cm −2 . By using BPQDs as optical saturable absorber, the ultrashort pulse with a pulse duration of about 1.08 ps centered at a wavelength of 1567.5 nm is generated in mode‐locked fiber laser. These results suggest that BPQDs may be developed as another kind of promising nanomaterial for ultrafast photonics.