期刊
PHYSICAL REVIEW LETTERS
卷 104, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.104.103903
关键词
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资金
- Conseil Regional de Bourgogne
- ANR COMOC
- FASTQUAST ITN Program of the 7th FP
- Swiss NSF [200021-111688, 200021-116198]
- SER in the framework of the Cost P18 program [C06.0114]
We show that higher-order nonlinear indices (n(4), n(6), n(8), n(10)) provide the main defocusing contribution to self-channeling of ultrashort laser pulses in air and argon at 800 nm, in contrast with the previously accepted mechanism of filamentation where plasma was considered as the dominant defocusing process. Their consideration allows us to reproduce experimentally observed intensities and plasma densities in self-guided filaments.
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