Broadband Nonlinear Photonics in Few-Layer Borophene

Chunyang Ma; Peng Yin; Karim Khan; Ayesha Khan Tareen; Rui Huang; Juan Du; Ye Zhang; Zhe Shi; Rui Cao; Songrui Wei; Xin Wang; Yanqi Ge; Yufeng Song; Lingfeng Gao

doi:10.1002/smll.202006891

Broadband Nonlinear Photonics in Few-Layer Borophene

Small. 2021 Feb;17(7):e2006891. doi: 10.1002/smll.202006891. Epub 2021 Jan 27.

Authors

Chunyang Ma¹, Peng Yin¹, Karim Khan², Ayesha Khan Tareen², Rui Huang³, Juan Du⁴, Ye Zhang¹, Zhe Shi¹, Rui Cao¹, Songrui Wei¹, Xin Wang^{1

5}, Yanqi Ge¹, Yufeng Song⁶, Lingfeng Gao¹

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 School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Selangor, 47500, Malaysia.
⁶ Intelligent Internet of Things and Intelligent Manufacturing Center, College of Electronics and Information Engineering, Shenzhen University, Shenzhen, 518060, P. R. China.

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.

Keywords: 2D borophene; femtosecond lasers; nonlinear optics.

Abstract

Grants and funding