Laser-induced breakdown in H_2 gas at 248 nm
- 20 June 1996
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 35 (18) , 3183-3184
- https://doi.org/10.1364/ao.35.003183
Abstract
Measurement of optical breakdown threshold in hydrogen gas with a KrF excimer laser at 248 nm is presented. The result shows a sharp increase of the threshold intensity at a few atmospheres of gas pressure when a focusing lens with a longer focal length is used. This enhancement is partially explained in terms of the influence of pump beam depletion in stimulated Raman scattering.Keywords
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