Multiple quasi-phase-matching for enhanced generation of selected high harmonics in aperiodic modulated fibers
Zheng LiDepartment of Physics, State Key Laboratory on Fiber Optic Local Area Communication Networks and Advanced Optical Communication Systems, Shanghai Jiao Tong University, Shanghai 200240, ChinaXianfeng ChenDepartment of Physics,The State Key Laboratory on Fiber Optic Local Area Communication Networks and Advanced Optical Communication Systems,Shanghai Jiao Tong University,Shanghai 200240,China)Songsong TangDepartment of Physics,The State Key Laboratory on Fiber Optic Local Area Communication Networks and Advanced Optical Communication Systems,Shanghai Jiao Tong University,Shanghai 200240,China)Ruxin LiState Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics & Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
2007en
ABI
Аннотация
A technique for enhanced generation of selected high harmonics in a gas medium, in a high ionization limit, is proposed in this paper. An aperiodically corrugated hollow-core fiber is employed to modulate the intensity of the fundamental laser pulse along the direction of propagation, resulting in multiple quasi-phase-matched high harmonic emissions at the cutoff region. Simulated annealing (SA) algorithm is applied for optimizing the aperiodic hollow-core fiber. Our simulation shows that the yield of selected harmonics is increased equally by up to 2 orders of magnitude compared with no modulation and this permits flexible control of the quasi-phase-matched emission of selected harmonics by appropriate corrugation.
Перевод пока недоступен
Идентификаторы
Цитирования и источники
Цитирований: 7Использованных источников: 0