Self-Focusing And Self-Defocusing Of A Tea Co[sub]2[/sub] Laser Pulse In CDF[sub]3[/sub] Vapor

P Galarneau; Y Beaudoin; S L Chin

doi:10.1117/12.938929

25 November 1986 Self-Focusing And Self-Defocusing Of A Tea Co₂ Laser Pulse In CDF₃ Vapor

P Galarneau, Y Beaudoin, S L Chin

Proceedings Volume 0669, Laser Applications in Chemistry; (1986) https://doi.org/10.1117/12.938929
Event: 1986 Quebec Symposium, 1986, Quebec City, Canada

Abstract

We observed self-focusing and self-defocusing of a TEA CO₂ laser pulse in CDF₃ vapor under different conditions. The experimental parameters that we varied are: the pressure inside the interaction cell, the frequency of the laser line, the intensity and the temporal length of the pulse. We have shown that it is possible to pass from self-focusing to self-defocusing by only increasing the energy of the laser pulse of a fixed temporal length. We propose a physical model using the selection rule of the molecular transition that can explain these experimental results.

Citation Download Citation

P Galarneau, Y Beaudoin, and S L Chin "Self-Focusing And Self-Defocusing Of A Tea Co₂ Laser Pulse In CDF₃ Vapor", Proc. SPIE 0669, Laser Applications in Chemistry, (25 November 1986); https://doi.org/10.1117/12.938929

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