2D BP/InSe Heterostructures as a Nonlinear Optical Material for Ultrafast Photonics
Yiqing Shu,
Zijun Zhong,
Chunyang Ma,
Penglai Guo,
Leiming Wu,
Zhitao Lin,
Xun Yuan,
Jianqing Li,
Weicheng Chen,
Quanlan Xiao
Affiliations
Yiqing Shu
School of Computer Science and Engineering, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao 591020, China
Zijun Zhong
International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
Chunyang Ma
Research Center of Circuits and Systems, Peng Cheng Laboratory (PCL), Shenzhen 518055, China
Penglai Guo
School of Computer Science and Engineering, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao 591020, China
Leiming Wu
Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China
Zhitao Lin
School of Computer Science and Engineering, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao 591020, China
Xun Yuan
School of Computer Science and Engineering, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao 591020, China
Jianqing Li
School of Computer Science and Engineering, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao 591020, China
Weicheng Chen
School of Physics and Optoelectronic Engineering, Foshan University, Foshan 528225, China
Quanlan Xiao
International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
The BP/InSe heterojunction has attracted the attention of many fields in successful combined high hole mobility of black phosphorus (BP) and high electron mobility of indium selenide (InSe), and enhanced the environmental stability of BP. Nevertheless, photonics research on the BP/InSe heterostructure was insufficient, while both components are considered promising in the field. In this work, a two-dimensional (2D) BP/InSe heterostructure was fabricated using the liquid-phase exfoliation method. Its linear and non-linear optical (NLO) absorption was characterized by ultraviolet−visible−infrared and Open-aperture Z-scan technology. On account of the revealed superior NLO properties, an SA based on 2D BP/InSe was prepared and embedded into an erbium-doped fiber laser, traditional soliton pulses were observed at 1.5 μm with the pulse duration of 881 fs. Furthermore, harmonic mode locking of bound solitons and dark-bright soliton pairs were also obtained in the same laser cavity due to the cross-coupling effect. The stable mode-locked operation can be maintained for several days, which overcome the low air stability of BP. This contribution further proves the excellent optical properties of 2D BP/InSe heterostructure and provides new probability of developing nano-photonics devices for the applications of double pulses laser source and long-distance information transmission.
