Spatiotemporal vectorial solitons in nonlinear ultrafast dual-core fiber lasers. (June 2023)

• Record Type: Journal Article
• Authors: Li, Boyao; Wang, Xingjie; Liang, Yaoyao; Sun, Jinghua; Zhu, Sufang; Chen, Xiaoyong; Zhou, Guiyao
• Is Part Of: Optics & laser technology. Volume 161(2023)
• Publication Date: 2023-06
• Subjects: Solitions -- Ultrafast lasers -- Bose–Einstein condensate; Optics -- Periodicals; Lasers -- Periodicals; Electronic journals; 621.366
• DOI: 10.1016/j.optlastec.2023.109197
• Languages: English
• ISSNs: 0030-3992

Abstract

Abstract: The processes of soliton generation and interference focus on the complex nonlinear soliton dynamics resembling matter particles. In order to further understand the dynamic process of solitons from a multidimensional perspective, here we report the vectorial solitons nature under two-sets pulse splitting in a single cavity induced by dual-core fiber assisted ultrafast fiber lasers. Owing to the weakly coupled cores in symmetrical dual core fiber (SDCF), two pulse groups interaction are formed in a cavity. By using the dispersive Fourier transformation technique (DFT), it was found that the four-component polarized rotation vector solitons (PRVS) generate. Moreover, gradually increasing the power can obtain the locked soliton bound state in two core space, and the corresponding evolution is similar to that of non-degenerate bright solitons in Bose Einstein condensates (BEC). In addition, by properly controlling the soliton phase offset in SDCF, the soliton rain state of multi pulse evolution can be obtained. The related experimental results would be fruitful to the communities interested in soliton dynamics and frequency comb lasers. Graphical abstract: Highlights: Multi-dimensional soliton dynamics was investigated. Multiple soliton states can be realized in ultrafast dual-core fiber lasers. The proposed system is a great platform for multidimensional soliton interaction.