Petawatt Femtosecond Laser Pulses from Titanium-Doped Sapphire Crystal
Petawatt Femtosecond Laser Pulses from Titanium-Doped Sapphire Crystal
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DOI：
10.3390/cryst10090783
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发表时间：
2020-09
期刊：
影响因子：
2.7
通讯作者：
H. Kiriyama;A. Pirozhkov;M. Nishiuchi;Y. Fukuda;A. Sagisaka;A. Kon;Y. Miyasaka;K. Ogura;N. Dove
中科院分区：
文献类型：
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作者：
H. Kiriyama;A. Pirozhkov;M. Nishiuchi;Y. Fukuda;A. Sagisaka;A. Kon;Y. Miyasaka;K. Ogura;N. Dove
超高强度飞秒激光现在已经成为在小规模实验室环境中研究极端物质状态的优秀科学工具。啁啾脉冲放大(CPA)与掺钛蓝宝石(钛：蓝宝石)晶体相结合的发明使这种激光器的实现成为可能。对超高强度科学和应用的追求正在推动全球新能力的发展。一台功率为1015W、飞秒(fS=10−15 S)、重复频率(0.1HZ)、高光束质量的J-KAREN-P(日本关西先进相对论工程PATWATE)钛宝石CPA激光器已经建成，用于加速带电粒子(离子和电子)，产生相干和非相干的超短脉冲、高能光子(X射线)辐射。用J-−-P激光获得了1022W/cm~2的超高强度和10−~12的高时间对比度和最少的预脉冲。本文综述了世界超高强度激光的发展，描述了J-Karen-P激光器的输出性能和时空质量的改善，并简要介绍了一些实验结果。
Ultra-high intensity femtosecond lasers have now become excellent scientific tools for the study of extreme material states in small-scale laboratory settings. The invention of chirped-pulse amplification (CPA) combined with titanium-doped sapphire (Ti:sapphire) crystals have enabled realization of such lasers. The pursuit of ultra-high intensity science and applications is driving worldwide development of new capabilities. A petawatt (PW = 1015 W), femtosecond (fs = 10−15 s), repetitive (0.1 Hz), high beam quality J-KAREN-P (Japan Kansai Advanced Relativistic ENgineering Petawatt) Ti:sapphire CPA laser has been recently constructed and used for accelerating charged particles (ions and electrons) and generating coherent and incoherent ultra-short-pulse, high-energy photon (X-ray) radiation. Ultra-high intensities of 1022 W/cm2 with high temporal contrast of 10−12 and a minimal number of pre-pulses on target has been demonstrated with the J-KAREN-P laser. Here, worldwide ultra-high intensity laser development is summarized, the output performance and spatiotemporal quality improvement of the J-KAREN-P laser are described, and some experimental results are briefly introduced.