Green frequency-doubled laser-beam propagation in high-temperature hohlraum plasmas.
We demonstrate propagation and small backscatter losses of a frequency-doubled (2omega) laser beam interacting with inertial confinement fusion hohlraum plasmas. The electron temperature of 3.3 keV, approximately a factor of 2 higher than achieved in previous experiments with open geometry targets, approaches plasma conditions of high-fusion yield hohlraums. In this new temperature regime, we measure 2omega laser-beam transmission approaching 80% with simultaneous backscattering losses of less than 10%. These findings suggest that good laser coupling into fusion hohlraums using 2omega light is possible.
Niemann
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Electrical Engineering Department, University of California Los Angeles, Box 951594, Los Angeles, California 90095-1594, USA.
Berger
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Divol
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Froula
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Jones
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Kirkwood
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Meezan
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Moody
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Ross
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Sorce
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Suter
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Glenzer
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