Green Frequency-Doubled Laser-Beam Propagation in High-Temperature Hohlraum Plasmas

Journal Article · Fri Feb 01 00:00:00 EST 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.100.045002· OSTI ID:21024661

Niemann, C ^[1]; Berger, R L; Divol, L; Froula, D H; Jones, O; Kirkwood, R K; Meezan, N; Moody, J D; Ross, J; Sorce, C; Suter, L J; Glenzer, S H ^[2]

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1. Electrical Engineering Department, University of California Los Angeles, Box 951594, Los Angeles, California 90095-1594 (United States)
2. Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550 (United States)

We demonstrate propagation and small backscatter losses of a frequency-doubled (2{omega}) 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 2{omega} laser-beam transmission approaching 80% with simultaneous backscattering losses of less than 10%. These findings suggest that good laser coupling into fusion hohlraums using 2{omega} light is possible.

• OSTI ID: 21024661
• Journal Information: Physical Review Letters, Vol. 100, Issue 4; Other Information: DOI: 10.1103/PhysRevLett.100.045002; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BACKSCATTERING
ELECTRON TEMPERATURE
FUSION YIELD
GEOMETRY
INERTIAL CONFINEMENT
KEV RANGE 01-10
PLASMA