Ternary ReS2(1-x)Se2xalloys of different composition for Q-switched and mode-locked all-fiber laser

Xinghao Duan; Kaixin Liu; Zihao Zhang; Wen Wen; Yue Dong; Junli Wang

doi:10.1088/1361-6528/ad3831

Ternary ReS_2(1-x)Se_2xalloys of different composition for Q-switched and mode-locked all-fiber laser

Nanotechnology. 2024 Mar 27. doi: 10.1088/1361-6528/ad3831. Online ahead of print.

Authors

Xinghao Duan¹, Kaixin Liu², Zihao Zhang³, Wen Wen⁴, Yue Dong², Junli Wang⁵

Affiliations

¹ Xidian University, Xidian University, Xian, Shaanxi, 710071, CHINA.
² Xidian University, Xian, Xian, Shaanxi, 710126, CHINA.
³ Xidian University, Room 120, G building, Southern campus of Xidian University, Xi'an, Xian, 710126, CHINA.
⁴ National Center for Nanoscience and Technology, Haidian District, Beijing, 100190, CHINA.
⁵ Xidian University, Yata District, Xian, Shaanxi, 710071, CHINA.

PMID: 38537264
DOI: 10.1088/1361-6528/ad3831

Abstract

This paper systematically studied the composition-controlled nonlinear optical properties and pulse modulation of ternary ReS_2(1-x)Se_2xalloys for the first time. The compositionally modulated characteristics of ReS_2(1-x)Se_2xon the band gap were simulated based on the first principles. We investigated the effect of the band gap on the saturable absorption properties. In addition, we demonstrated the modulation characteristics of different components ReS_2(1-x)Se_2xon 1.5 μm Q-switched pulse performance. The Q-switched threshold, repetition rate, and pulse duration increase as the S(sulfur)-element composition rise. And pulse energy also was affected by the S(sulfur)-element composition. The ReS_0.8Se_1.2SA was selected to realize a conventional soliton with high energy in the all-fiber mode-locked laser. The pulse was centered at 1562.9 nm with a pulse duration of 2.26 ps, a repetition rate of 3.88 MHz, and maximum pulse energy of 1.95 nJ. This work suggests that ReS_2(1-x)Se_2xhas great potential in laser technology and nonlinear optics, and widely extends the material applications in ultrafast photonics.&#xD.

Keywords: ReS<sub>2(1-x)</sub>Se<sub>2x</sub>; Ultrafast laser; fiber laser; mode-locking; optical solitons.