Path integrals method and description of a valance band impact ionization under multiphoton heating of electrons

Vladimir N. Strekalov

doi:10.1117/12.344374

7 April 1999 Path integrals method and description of a valance band impact ionization under multiphoton heating of electrons

Vladimir N. Strekalov

Author Affiliations +

Proceedings Volume 3578, Laser-Induced Damage in Optical Materials: 1998; (1999) https://doi.org/10.1117/12.344374
Event: Laser-Induced Damage in Optical Materials: 1998, 1998, Boulder, CO, United States

Abstract

The path integrals method is used for description of electrons heating by laser light and for determining the avalanche ionization rate. The limit of ultra-short pulses is considered as well as the stationary ionization regime. It is shown that multiphoton processes of electrons heating are more important than single-photon ones. A new dependence of threshold values on the laser pulse duration is predicted. Estimates are carried out for thresholds in the system 'Ruby laser radiation-silicon'. The thresholds thus found exceed experimental values. The suggested conclusion is that the processes of electron-phonon scattering cannot provide a rate of energy accumulation required for developing an avalanche.

Citation Download Citation

Vladimir N. Strekalov "Path integrals method and description of a valance band impact ionization under multiphoton heating of electrons", Proc. SPIE 3578, Laser-Induced Damage in Optical Materials: 1998, (7 April 1999); https://doi.org/10.1117/12.344374

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