Petawatt Femtosecond Laser Pulses from Titanium-Doped Sapphire Crystal

Author:

Kiriyama Hiromitsu,Pirozhkov Alexander S.ORCID,Nishiuchi Mamiko,Fukuda Yuji,Sagisaka Akito,Kon Akira,Miyasaka Yasuhiro,Ogura Koichi,Dover Nicholas P.,Kondo Kotaro,Sakaki Hironao,Koga James K.ORCID,Esirkepov Timur Zh.,Huang KaiORCID,Nakanii Nobuhiko,Kando MasakiORCID,Kondo Kiminori,Bock Stefan,Ziegler TimORCID,Püschel Thomas,Zeil Karl,Schramm UlrichORCID

Abstract

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.

Funder

Japan Society for the Promotion of Science

Precursory Research for Embryonic Science and Technology

Japan Science and Technology Agency

Publisher

MDPI AG

Subject

Inorganic Chemistry,Condensed Matter Physics,General Materials Science,General Chemical Engineering

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