Paper
6 February 2012 Performance of the smoothing of small target spots in frequency-tripled high-power laser
Xiujuan Jiang, Jinghui Li
Author Affiliations +
Abstract
The uniform irradiation performance of the small target spots for indirect-drive inertial confinement fusion is studied. A lens array and the technique of smoothing by spectral dispersion are included in the frequency-tripled high-power laser driver. The intensity distributions of the target spots are simulated and their spatial power spectra are analyzed. The results show that spots of clear envelopes can be obtained with a lens array and smoothing by spectral dispersion has obvious effects in eliminating high-contrast intensity modulation inside the spots, even in the cases they are very small. With the two methods of beam smoothing, performance of indirect-drive experiments is expected to be evidently improved.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Xiujuan Jiang and Jinghui Li "Performance of the smoothing of small target spots in frequency-tripled high-power laser", Proc. SPIE 8236, Laser Resonators, Microresonators, and Beam Control XIV, 823625 (6 February 2012); https://doi.org/10.1117/12.906931
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KEYWORDS
High power lasers

Ultraviolet radiation

Modulation

Optical simulations

Solids

Laser ablation

Mechanics

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