Filamentation nonlinear optics
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- Chin, S., Théberge, F. & Liu, W. Appl. Phys. B (2007) 86: 477. doi:10.1007/s00340-006-2455-z
A filamenting femtosecond laser pulse self-stabilizes the intensity fluctuation inside the filament core due to intensity clamping and generates an excellent spatial beam quality inside the core due to self-spatial filtering. The high quality of the core can be sampled by nonlinear processes. A few experimental examples are shown: self-phase modulation, four-wave mixing, third-harmonic generation and waveguide writing in glass.