Type

Journal Article

Authors

Werner J Blau
Jun Wang
Jonathan N Coleman
Long Zhang
John J Magan
Jing Jing Wang
Xiaoyan Zhang
Gaozhong Wang
Beata M Szydłowska
Kangpeng Wang

Subjects

Physics

Topics
phosphorus relaxation times recent progress visible infrared nonlinear response nonlinear dynamics comparative study

Ultrafast Nonlinear Excitation Dynamics of Black Phosphorus Nanosheets from Visible to Mid-Infrared. (2016)

Abstract The recent progress on black phosphorus makes it a promising candidate material for broadband nanophotonic devices, especially operating in the mid-infrared spectral region. Here, the excited carrier dynamics and nonlinear optical response of unoxidized black phosphorus nanosheets and their wavelength dependence were systematically studied from 800 nm to 2.1 μm. The wavelength-dependent relaxation times of black phosphorus nanosheets are determined to be 360 fs to 1.36 ps with photon energies from 1.55 to 0.61 eV. In a comparative study with graphene, we found that black phosphorus has a faster carrier relaxation in near- and mid-infrared region. With regard to nonlinear optical absorption, the response of black phosphorus significantly increases from near- to mid-infrared, and black phosphorus is also confirmed to be better as saturable absorber to MoS2 in infrared region.
Collections Ireland -> Trinity College Dublin -> PubMed

Full list of authors on original publication

Werner J Blau, Jun Wang, Jonathan N Coleman, Long Zhang, John J Magan, Jing Jing Wang, Xiaoyan Zhang, Gaozhong Wang, Beata M Szydłowska, Kangpeng Wang

Experts in our system

1
Werner Blau
Trinity College Dublin
Total Publications: 109
 
2
Jun Wang
Trinity College Dublin
Total Publications: 37
 
3
Jonathan Coleman
Trinity College Dublin
Total Publications: 217
 
4
Long Zhang
Trinity College Dublin
Total Publications: 6
 
5
Xiaoyan Zhang
Trinity College Dublin
Total Publications: 6
 
6
Kangpeng Wang
Trinity College Dublin
Total Publications: 5