Direct amplification of femtosecond optical vortices in a single-crystal fiber

作     者：CHANGSHENG ZHENG TIANYI DU LEI ZHU ZHANXIN WANG KANGZHEN TIAN YONGGUANG ZHAO ZHIYONG YANG HAOHAI YU VALENTIN PETROV CHANGSHENG ZHENG;TIANYI DU;LEI ZHU;ZHANXIN WANG;KANGZHEN TIAN;YONGGUANG ZHAO;ZHIYONG YANG;HAOHAI YU;VALENTIN PETROV

作者机构：Jiangsu Key Laboratory of Advanced Laser Materials and DevicesSchool of Physics and Electronic EngineeringJiangsu Normal UniversityXuzhou 221116China State Key Laboratory of Crystal Materials and Institute of Crystal MaterialsShandong UniversityJinan 250100China Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy12489 BerlinGermany 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2024年第12卷第1期

页      面：27-32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：National Natural Science Foundation of China(52032009 62075090) 

主　　题：fiber amplifier crystal 

摘      要：Spatially twisted light with femtosecond temporal structure is of particular interest in strong-field physics and light–matter ***,present femtosecond vortex sources exhibit limited power handling capabilities,and their amplification remains an ongoing challenge particularly for high-order orbital angular momentum(OAM)states due to several inherent technical ***,we exploit a straightforward approach to directly amplify a femtosecond optical vortex(FOV,OAM=-8?)by using a two-stage single-crystal fiber(SCF)amplifier system without pulse stretching and compression in the time domain,delivering 23-W,163-fs pulses at a repetition rate of1 *** spatial and temporal features are well-conserved during the amplification,as well as the high modal purity(96%).The results indicate that the multi-stage SCF amplifier system is particularly suited for direct amplification of high-order *** generated high-power femtosecond OAM laser beams are expected to help reveal complex physical phenomena in light–matter interactions and pave the way for practical applications in attoscience,laser plasma acceleration,and high-dimension micromachining.