Bi2Te3/Sb2Te3-graphene bidirectional heterostructures: Enhancement of optical nonlinearity and short pulse generation of solid-state laser

Gao，Shufang1,2; Zhang，Zheng1,3; Li，Bingxuan4; Feng，Jun1

2023-12-01

10.1016/j.optlastec.2023.109779

Optics and Laser Technology   Impact Factor & Quartile

0030-3992

1879-2545

To overcome the application limitations of the individual 2D materials, the BiTe/SbTe-Graphene (BTST-G) bidirectional heterostructures (BHSs) with high crystallinity and significantly enhance optical properties are constructed by a simple self-assembly solvothermal method for the first time. The BHSs not only combine the narrower band gap, larger modulation depth of BTST but also integrate the higher carrier mobility of graphene, enabling them to be excellent absorbers (SAs) for ultra-short-pulse laser technology. This paper further demonstrates that the stable passively Q-switched laser operation can be self-started immediately at a relatively low threshold power of 50 mW using the BTST-G BHSs. The shortest pulse width of 160 ns with a repetition rate of 1026 kHz is obtained, corresponding to the pulse energy of 2.0 μJ and the output power of 2.043 W. Compared with the ST-G, BT-G, the peak power increases 2 times and the pulse width is compressed by 66%. This work paves the way for future fabrication of unprecedented 2D heterostructures for application in pulse laser and other research which will bring more opportunities and challenges for the development of science technology and industry.

Heterostructure Nanomaterials Nonlinear optical property Pulsed laser Topological insulators

SCI

English

First ; Corresponding

Booz Allen Foundation[T2020008];

Optics ; Physics

Optics ; Physics, Applied

WOS:001047929100001

ELSEVIER SCI LTD

ENGINEERING

2-s2.0-85165233523

Scopus

1.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.School of Physics and Optoelectronic Engineering,Yangtze University,Jingzhou,434023,China
3.Harbin University of Technology,Harbin,No. 92, Xidazhi Street, Nangang District,150001,China
4.Key Laboratory of Optoelectronic Materials Chemistry and Physics,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou,Fujian,350002,China

Gao，Shufang,Zhang，Zheng,Li，Bingxuan,et al. Bi2Te3/Sb2Te3-graphene bidirectional heterostructures: Enhancement of optical nonlinearity and short pulse generation of solid-state laser[J]. Optics and Laser Technology,2023,167.

Gao，Shufang,Zhang，Zheng,Li，Bingxuan,&Feng，Jun.(2023).Bi2Te3/Sb2Te3-graphene bidirectional heterostructures: Enhancement of optical nonlinearity and short pulse generation of solid-state laser.Optics and Laser Technology,167.

Gao，Shufang,et al."Bi2Te3/Sb2Te3-graphene bidirectional heterostructures: Enhancement of optical nonlinearity and short pulse generation of solid-state laser".Optics and Laser Technology 167(2023).