Three-stage dynamics of nonlinear pulse amplification in ultrafast mid-infrared fiber amplifier with anomalous dispersion

doi:arXiv:2501.12695

	Three-stage dynamics of nonlinear pulse amplification in ultrafast mid-infrared fiber amplifier with anomalous dispersion
	Sun, Weiyi1,2,3,4,5 ; Huang, Jiapeng 1,2; Chen, Liming 1,2; Luo, Zhuozhao 1,2; Lin, Wei 1,2,6; Li, Zeqing 1,2,3,4; Jiang, Cong 1,2; Huang, Zhiyuan 3,4; Jiang, Xin 1,2; Wang, Pengfei 7; Leng, Yuxin 3,4; Pang, Meng 1,2,3,4,6
	2025-01-22
状态	已发表
摘要	Nonlinear pulse amplification in optical fiber, with capability of breaking the gain-bandwidth limitation, is a key technique for high-energy, ultrafast pulse generation. In the longer wavelength region (including 1.55 Î¼m, 2Î¼m and 2.8 Î¼m) where the gain fiber has normally strong anomalous dispersion, the nonlinear amplification process over fiber exhibits more complicated dynamics than that of its 1-Î¼m counterpart, and the underlying mechanism of the nonlinear pulse propagation process in high-gain anomalous fiber is still elusive so far. Here, we demonstrate an in-depth study on the nonlinear amplification process in high-gain ultrafast mid-infrared fiber, providing clear physical understanding on the debate of adiabatic soliton compression. We unveil that under the high-gain condition, the ultrafast pulse launched into the anomalous gain fiber experiences successively three distinct stages, named as the balance between linear and nonlinear chirp, high-order-soliton-like pulse compression and pulse splitting due to high-order effects. While a relatively-clean ultrafast pulse can be obtained immediately after the high-order-soliton-like compression stage, excessive gain fiber length could hardly enhance further the pulse peak power due to soliton splitting. Our findings can provide several critical guidelines for designing high-power ultrafast fiber amplifiers at near- and mid-infrared wavelengths.
关键词	middle infrared fiber laser nonlinear fiber optics ultrafast optics mode-locked laser laser amplifier
语种	英语
DOI	arXiv:2501.12695
相关网址	查看原文
出处	Arxiv
收录类别	PPRN.PPRN
WOS记录号	PPRN:120891123
WOS类目	Optics
资助项目	Strategic Priority Research Program of the Chinese Academy of Science[XDB0650000] ; Shanghai Science and Technology Innovation Action Plan[21ZR1482700] ; Shanghai Science and Technology Plan Project Funding[23JC1410100]
文献类型	预印本
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/503590
专题	物质科学与技术学院物质科学与技术学院_博士生
通讯作者	Huang, Jiapeng; Wang, Pengfei; Pang, Meng
作者单位	1.Hangzhou Inst Opt & Fine Mech, Russell Ctr Adv Lightwave Sci, Hangzhou 311421, Peoples R China 2.Shanghai Inst Opt & Fine Mech, Hangzhou 311421, Peoples R China 3.Chinese Acad Sci CAS, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China 4.Chinese Acad Sci CAS, Shanghai Inst Opt & Fine Mech SIOM, CAS Ctr Excellence UltraIntense Laser Sci, Shanghai 201800, Peoples R China 5.Shanghai Tech Univ, Sch Phys Sci & Technol, Shanghai 200031, Peoples R China 6.Univ Chinese Acad Sci, Hangzhou Inst Adv Study, Sch Phys & Optoelect Engn, Hangzhou 310024, Peoples R China 7.Northeast Normal Univ, Ctr Adv Optoelect Funct Mat Res, Changchun 130024, Peoples R China
推荐引用方式 GB/T 7714	Sun, Weiyi,Huang, Jiapeng,Chen, Liming,et al. Three-stage dynamics of nonlinear pulse amplification in ultrafast mid-infrared fiber amplifier with anomalous dispersion. 2025.