The Review of Laser Engineering
Online ISSN : 1349-6603
Print ISSN : 0387-0200
ISSN-L : 0387-0200
Laser Original
Conceptual Design of a Sub-Exa-Watts Laser System “GEKKO-EXA”
Junji KAWANAKA, Hidetsugu YOSHIDA, Koji TSUBAKIMOTO, Kana FUJIOKA, Hidetoshi MURAKAMI, Yasushi FUJIMOTO, Noriaki MIYANAGA, Hiroshi AZECHI
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Keywords: Ultra-high-peak-power lasers, Few cycle pulse lasers, High power lasers
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2014 Volume 42 Issue 2 Pages 179-

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Abstract
A 50 PW, 10 fs ultrahigh-peak-power laser has been conceptually designed. The system is based on optical parametric chirped pulse amplifi cation. A 250 J DPSSL and a fl ash-lamp-pumped kJ laser, and a broadband OPCPA chain with partially deuterated KDP（pDKDP）crystals are designed as new repeatable pump sources and a few-cycle pulse amplifier, respectively. The pDKDP has been successfully grown at several different deuteration ratios. A broadband grating with high diffraction effi ciency in the compressor is under designing.
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© 2020 by The Laser Society of Japan
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