Broadband Nonlinear Photonics in Few-Layer Borophene

Ma C 1 , Yin P 1 , Khan K 2 , Tareen AK 2 , Huang R 3 , Du J 4 Show all authors , Zhang Y 1 , Shi Z 1 , Cao R 1 , Wei S 1 , Wang X 1 , Ge Y 1 , Song Y 5 , Gao L 1

Affiliations 

  • 1 Institute of Microscale Optoelectronics, Collaborative Innovation Centre for Optoelectronic Science & Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), Shenzhen University, Shenzhen, 518060, P. R. China
  • 2 School of Electrical Engineering & Intelligentization, Dongguan University of Technology, Dongguan, 523808, P. R. China
  • 3 School of Materials Science and Engineering, Hanshan Normal University, Chaozhou, Guangdong, 521041, P. R. China
  • 4 Faculty of Mathematics and Physics, Huaiyin Institute of Technology, Huai'an, 223003, P. R. China
  • 5 Intelligent Internet of Things and Intelligent Manufacturing Center, College of Electronics and Information Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
Small, 2021 Jan 27.
PMID: 33502109 DOI: 10.1002/smll.202006891

Abstract

In this paper, 2D borophene is synthesized through a liquid-phase exfoliation. The morphology and structure of as-prepared borophene are systemically analyzed, and the Z-scan is used to measure the nonlinear optical properties. It is found that the saturable absorber (SA) properties of borophene make it serve as an excellent broadband optical switch, which is strongly used for mode-locking in near- and mid-infrared laser systems. Ultrastable pulses with durations as short as 792 and 693 fs are successfully delivered at the central wavelengths of 1063 and 1560 nm, respectively. Furthermore, stable pulses at a wavelength of 1878 nm are demonstrated from a thulium mode-locked fiber laser based on the same borophene SA. This research reveals a significant potential for borophene used in lasers helping extending the frontiers of photonic technologies.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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