Delayed optical feedback-regulated artificial soliton molecule in a femtosecond optical parametric oscillator

作     者：Yu Cai Jintao Fan Fanchao Meng Youjian Song Minglie Hu 

作者机构：Ultrafast Laser LaboratoryState Key Laboratory of Precision Measurement Technology and InstrumentsTianjin UniversityTianjin 300072China Ultrafast Laser LaboratoryCollege of Precision Instrument and Optoelectronics EngineeringTianjin UniversityTianjin 300072China State Key Laboratory of Integrated OptoelectronicsCollege of Electronic Science and EngineeringJilin UniversityChangchun 130012China 

出 版 物：《PhotoniX》 (智汇光学(英文))

年 卷 期：2024年第5卷第1期

页      面：34-53页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：supported by the National Key R&D Program of China(Grant No.2023YFB3611000) the National Natural Science Foundation of China(NSFC)(Grant Nos.62205121,62235014,62105237,and 62227821) 

主　　题：Soliton molecule Femtosecond Optical parametric oscillator Delayed optical feedback 

摘      要：Soliton molecules(SMs)play a crucial role in nonlinear optical systems,enriching our understanding of nonlinear science through the study of their interaction *** passively mode-locked fiber lasers offer an efficient platform for generating diverse types of SMs,the complex internal dynamics of the laser often pose challenges in achieving predetermined temporal separations between ***,we implement a delayed optical feedback technique within a femtosecond optical parametric oscillator,enabling the generation of SMs with precise and controllable temporal separations.A theoretical model,which models the intracavity iterations of the signal with a simplified Ikeda map,is proposed to study the impact of parametric gain,intracavity feedback delay,and cavity length on the internal separations of the *** experimental results confirm that adjusting the cavity length allows for producing desired temporal separations within *** reveal the evolution dynamics of the SMs,we further develop a rigorous numerical model using the carrier-resolved Forward Maxwell Equation,which is capable of modeling ultra-broadband complex dynamics based on a single equation without relying on the slowly-varying envelope *** numerical model unveils the rich formation dynamics of the SMs at various separations,which confirms the critical role of the gain window provided by the *** work opens up new opportunities for the on-demand generation of SMs and provides valuable insights into the complex dynamics in femtosecond optical parametric oscillator systems with optical delayed feedback.