Ionization Of Rare Gas Atoms By A CO[sub]2[/sub] Laser: Extreme Order Of Nonlinearity

F Yergeau; S L Chin; P Lavigne

doi:10.1117/12.938708

21 October 1986 Ionization Of Rare Gas Atoms By A CO₂ Laser: Extreme Order Of Nonlinearity

F Yergeau, S L Chin, P Lavigne

Proceedings Volume 0664, High Intensity Laser Processes; (1986) https://doi.org/10.1117/12.938708
Event: 1986 Quebec Symposium, 1986, Quebec City, Canada

Abstract

Collisionless ionization of five of the rare gases has been observed using a CO₂ laser, at intensities in the range 10¹³ - 10¹⁴ W/cm², with a pulse duration of 1 ns. Calculations taking into account the space - and time - dependence of the laser pulse show that the ionization rate is a highly nonlinear function of intensity. It is shown that the nonlinearity is so strong that an "ON-OFF" hypothesis, stating that ionization is saturated as soon as it begins to appear, is sufficient to reproduce the experimental results.

Citation Download Citation

F Yergeau, S L Chin, and P Lavigne "Ionization Of Rare Gas Atoms By A CO₂ Laser: Extreme Order Of Nonlinearity", Proc. SPIE 0664, High Intensity Laser Processes, (21 October 1986); https://doi.org/10.1117/12.938708

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