30-mJ, diode-pumped, chirped-pulse Yb:YLF regenerative amplifier.
A diode-pumped chirped-pulse regenerative amplifier with a cooled Yb:YLF crystal has been developed. The output pulse energy is 30 mJ at 20-Hz repetition rate. A high effective extraction efficiency of 68% is obtained, which is attributed to reduced saturation fluence at low temperature and to a high effective pulse energy fluence during regenerative amplification. After pulse compression by use of a parallel grating pair, 18-mJ pulse energy and 795-fs pulse duration are obtained.
Advanced Photon Research Center, Japan Atomic Energy Research Institute, 8-1 Umemidai, Kizu-cho, Soraku-gun, Kyoto 619-0215, Japan. kawanaka@apr.jaeri.go.jp
Junji
J
Kawanaka
Koichi
K
Yamakawa
Hajime
H
Nishioka
Ken-ichi
K
Ueda