期刊
IEEE JOURNAL OF QUANTUM ELECTRONICS
卷 47, 期 5, 页码 597-606出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JQE.2011.2107730
关键词
Large mode area fibers; mode-locked lasers; multi-mode fibers; solitons
资金
- National Science Foundation (NSF) [ECCS 0901323, DMS-0604700, DMS-1007621]
- National Institutes of Health [EB002019]
- Air Force Office of Scientific Research [FA9550-09-0147]
- Fond Quebecois de Recherche sur la Nature et les Technologies
- Direct For Mathematical & Physical Scien
- Division Of Mathematical Sciences [1007621] Funding Source: National Science Foundation
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [0901323] Funding Source: National Science Foundation
The mode-locking of dissipative soliton fiber lasers using large mode area fiber supporting multiple transverse modes is studied experimentally and theoretically. The averaged mode-locking dynamics in a multi-mode fiber are studied using a distributed model. The co-propagation of multiple transverse modes is governed by a system of coupled Ginzburg-Landau equations. Simulations show that stable and robust mode-locked pulses can be produced. However, the mode-locking can be destabilized by excessive higher-order mode content. Experiments using large core step-index fiber, photonic crystal fiber, and chirally-coupled core fiber show that mode-locking can be significantly disturbed in the presence of higher-order modes, resulting in lower maximum single-pulse energies. In practice, spatial mode content must be carefully controlled to achieve full pulse energy scaling. This paper demonstrates that mode-locking performance is very sensitive to the presence of multiple waveguide modes when compared to systems such as amplifiers and continuous-wave lasers.
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