Broadband nonlinear optical response in Bi2Se3-Bi2Te3 heterostructure and its application in all-optical switching
Source abstract
Abstract
Compared with homogeneous two-dimensional materials, two-dimensional nanomaterial heterostructures which consist of different kinds of two-dimensional materials exhibit stronger light-matter interaction. The topological insulator of Bi2Se3-Bi2Te3 heterostructures were synthesised by two-step reaction proceeding. The reaction arised in two steps: at first, Bi2Se3 nanosheets were prepared in the solvent of ethylene glycol (EG); secondly, Bi2Te3 was epitaxial grown on the Bi2Se3 nanosheets to form heterostructure materials. The spatial self-phase modulation (SSPM) effect of 457nm, 532nm and 671nm was achieved by dispersing the as-prepared Bi2Se3-Bi2Te3 heterostructure materials into ethanol as an optical medium. Furthermore, based on the effect of SSPM, a device called all-optical switching was also realized. As an interesting nonlinear optical materials, topological insulator Bi2Se3-Bi2Te3 heterostructures might be an effective proposal for photonics devices such as optical switchings, optical modulators, photodetectors, etc.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: 2D Materials and Applications · Topological Materials and Phenomena · Advanced Fiber Laser Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University 1 , Shenzhen 518060, China
College of Science, Key Laboratory for Microstructural Functional Materials of Jiangxi Province, Jiujiang University 2 , Jiujiang 332005, PR China
Funding
Jiangxi Natural Science Foundation · Project for Distinguished Young Scholars of Jiangxi Province · Science and Technology Project of Jiangxi Provincial Education Department · National Natural Science Foundation of China · Natural Science Foundation of Guangdong Province
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