High-contrast, high-intensity laser pulse generation using a nonlinear preamplifier in a Ti:sapphire laser system

被引：68
作者：
Kiriyama, Hiromitsu [1 ]
Mori, Michiaki [1 ]
Nakai, Yoshiki [1 ]
Shimomura, Takuya [1 ]
Tanoue, Manabu [1 ]
Akutsu, Atushi [1 ]
Kondo, Shuji [1 ]
Kanazawa, Shuhei [1 ]
Okada, Hajime [1 ]
Motomura, Tomohiro [1 ]
Daido, Hiroyuki [1 ]
Kimura, Toyoaki [1 ]
Tajima, Toshiki [1 ]
机构：
[1] Japan Atom Energy Agcy, Adv Photon Res Ctr, Kizu, Kyoto 6190215, Japan
来源：
OPTICS LETTERS | 2008年 / 33卷 / 07期
关键词：
D O I：
10.1364/OL.33.000645
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report a high-contrast, high-intensity Ti:sapphire chirped-pulse amplification system that incorporates a nonlinear preamplifier based on optical parametric chirped-pulse amplification (OPCPA). By cooling the Ti:sapphire crystal in the final amplifier down to 77 K, the chirped-pulses are amplified to 2.9 J at a 10 Hz repetition rate without a thermal lensing effect. Pulse compression down to 19 fs duration obtained after amplification indicates a peak power of 80 TW. With the OPCPA, the temporal contrast is significantly improved to better than 7 x 10(-9) in a few picoseconds interval prior to the main laser pulse. (C) 2008 Optical Society of America.
引用
收藏
页码：645 / 647
页数：3
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