Upgrade of the OMEGA laser system
Upgrade of the OMEGA laser system
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OMEGA激光系统升级
DOI：
10.1117/12.60169
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
C. Verdon
中科院分区：
文献类型：
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作者：
T. Boehly;R. Craxton;Robert J. Hutchison;J. Kelly;T. Kessler;S. Kumpan;S. Letzring;R. Mccrory;S. Morse;W. Seka;S. Skupsky;J. Soures;C. Verdon
OMEGA激光升级项目的资金已经获得批准，30千焦、351纳米、60束激光系统的设计已经开始。该系统将提供一种独特的能力来验证高性能、直接驱动的激光聚变目标。我们强调了一个系统的各种设计特点，该系统将达到1% - 2%的辐照均匀性，具有多种脉冲整形，从而为直接驱动实验提供了广泛的辐照选择。Nd：玻璃激光系统由60条光束线组成，采用20厘米的磁盘功率放大器、三倍频、衍射光学相变和光谱色散（SSD）平滑。初始脉冲形状将通过具有不同脉冲宽度的两束光束的同轴传播来实现。这些“主”脉冲和“脚”脉冲将占据激光孔径的不同部分。此外，电光技术将用于这些脉冲的整形和截断。
Funding for the OMEGA laser Upgrade project has been approved and the design of a 30-kJ, 351-nm, 60-beam laser system has begun. This system will provide a unique capability to validate high-performance, direct-drive laser-fusion targets. We highlight various design features of a system that will attain 1% - 2% irradiation uniformity with versatile pulse shaping, thus providing a wide range of irradiation options for direct-drive experiments. The Nd:glass laser system consists of 60 beamlines using 20-cm disk power-amplifiers, frequency- tripling, phase conversion with diffractive optics, and smoothing by spectral dispersion (SSD). The initial pulse shape will be achieved by co-axial propagation of two beams having different pulse widths. These 'main' and 'foot' pulses will occupy different portions of the laser aperture. In addition, electro-optic technology will be used for shaping and truncation of these pulses.