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Journal articles
Enhanced Spatiotemporal Laser-Beam Smoothing in Gas-Jet Plasmas
Abstract : Spatiotemporal smoothing of large-scale laser intensity fluctuations is observed for a laser beam focused into underdense helium plasmas. This smoothing is found to be severely enhanced when focusing the laser beam into a helium gas jet. In contrast to other experiments with preformed plasmas, the average and the peak laser intensities are well below the threshold for ponderomotive self-focusing. The coherence characteristics of the transmitted light are measured for various electron densities, and the smoothing effect is explained by multiple scattering of laser light on self-induced density perturbations.
https://hal-polytechnique.archives-ouvertes.fr/hal-00518894
Contributor : Thuy Le <>
Submitted on : Friday, September 17, 2010 - 2:59:36 PM
Last modification on : Friday, April 23, 2021 - 3:15:04 AM
Contributor : Thuy Le <>
Submitted on : Friday, September 17, 2010 - 2:59:36 PM
Last modification on : Friday, April 23, 2021 - 3:15:04 AM