Prepulse-free petawatt laser for a fast ignitor

被引：143

作者：

Kitagawa, Y ^{[1
]}

Fujita, H ^{[1
]}

Kodama, R ^{[1
]}

Yoshida, H ^{[1
]}

Matsuo, S ^{[1
]}

Jitsuno, T ^{[1
]}

Kawasaki, T ^{[1
]}

Kitamura, H ^{[1
]}

Kanabe, T ^{[1
]}

Sakabe, S ^{[1
]}

Shigemori, K ^{[1
]}

Miyanaga, N ^{[1
]}

Izawa, Y ^{[1
]}

机构：

[1] Osaka Univ, Inst Laser Engn, Osaka 5650871, Japan

来源：

IEEE JOURNAL OF QUANTUM ELECTRONICS | 2004年 / 40卷 / 03期

关键词：

chirped pulse amplification; fast ignitor; optical parametric chirped amplification system (OPCPA); petawatt laser;

D O I：

10.1109/JQE.2003.823043

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have developed a prepulse-free short-pulse Nd:glass laser system of 0.9-PW peak power to heat a pre-imploded high-density plasma. An optical parametric chirped amplification system is introduced to reduce the prepulses to an amplitude (1.5 X 10(-8)) of that of the main pulse. The compressor is a double-path grating pair system 94 cm in diameter compressing the 50-cm-diameter laser beam to 470 fs. An off-axis parabolic mirror has focused the 420-J energy to an intensity of 2.5 x 10(19) W.cm(-2). Part of the front end of the chirped pulse is seeded into the preamplifier of the GEKKO XII laser, used to implode a pellet target, to enable the petawatt laser to irradiate the pre-imploded pellet during stagnation of a few tens of picoseconds.

引用

页码：281 / 293

页数：13

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