Abstract
The interaction between an intense laser beam and the corona of an irradiated spherical target causes the generation of second harmonic (2ω0) emission at the optical density (nc) and 3/2 harmonic emission (3ω0/2) at the quarter critical density (nc/4). Potentially, a number of mechanisms can be responsible for the generation of these harmonics, but for laser fusion, resonant absorption at nc and the two plasmon and stimulated Raman instabilities at nc/4 are of particular concern because of their capability of producing fast electrons.
© 1982 Optical Society of America
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