Reduction of 3ω/2 emission from laser-produced plasmas with broad bandwidth, induced spatial incoherence at 0.53 μm
- 1 June 1991
- journal article
- research article
- Published by AIP Publishing in Physics of Fluids B: Plasma Physics
- Vol. 3 (6) , 1479-1484
- https://doi.org/10.1063/1.859715
Abstract
Measurements of the 3ω0/2 emission from laser‐irradiated targets at 0.53 μm were made at three angles over a wide range of laser bandwidths with and without induced spatial incoherence (ISI) echelons. The 3ω0/2 emission was found to be correlated with hard x rays but not Raman spectra, suggesting that the 3ω0/2 radiation was due to two‐plasmon decay. Reduction of both 3ω0/2 emission and the accompanying hard x rays by ISI required five to ten times larger bandwidths than needed to suppress stimulated Raman scattering and stimulated Brillouin scattering.Keywords
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