The Interaction Of High-Power, Femtosecond Pulses With Gases

P B Corkum; Claude Rolland

doi:10.1117/12.965139

11 July 1988 The Interaction Of High-Power, Femtosecond Pulses With Gases

P B Corkum, Claude Rolland

Proceedings Volume 0913, High Intensity Laser-Matter Interactions; (1988) https://doi.org/10.1117/12.965139
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

Abstract

Multiphoton ionization of xenon with 620 nm pulses is reviewed. Near saturated ionization is observed at 2 x 10¹³ W/cm² using 0.9 psec pulses and 6 x 10¹³ W/cm² using 90 fsec pulses. These results indicate that atomic systems can be irradiated with very high intensity ultrashort pulses without significant ionization. Below the ionization threshold new nonlinear phenomena, such as continuum generation, can be investigated. We review measurements of continuum generation in gases made with ultrashort pulses. The nonlinearity responsible for self-focusing and self-phase modulation saturates with laser intensity. A diffraction limited input beam has its spatial profile reconstituted after self-focusing.

Citation Download Citation

P B Corkum and Claude Rolland "The Interaction Of High-Power, Femtosecond Pulses With Gases", Proc. SPIE 0913, High Intensity Laser-Matter Interactions, (11 July 1988); https://doi.org/10.1117/12.965139

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