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Ochi, Yoshihiro; Hasegawa, Noboru; Kawachi, Tetsuya; Tanaka, Momoko; Nishikino, Masaharu; Kishimoto, Maki; Oba, Toshiyuki; Sugiyama, Akira
no journal, ,
Kiriyama, Hiromitsu; Mori, Michiaki; Nakai, Yoshiki; Shimomura, Takuya; Tanoue, Manabu*; Okada, Hajime; Kondo, Shuji; Kanazawa, Shuhei; Daito, Izuru; Sagisaka, Akito; et al.
no journal, ,
We demonstrate a high-contrast, high-intensity double chirped-pulse amplification (CPA) Ti:sapphire laser system using an optical parametric chirped-pulse (OPCPA) pre- amplifier. By injecting cleaned microjoule seed pulses into the OPCPA, a temporal contrast greater than 10
within picosecond times before the main femtosecond pulse is demonstrated with an output pulse energy of 1.7 J and a pulse duration of 30 fs, corresponding to a peak power of 60 TW at a 10 Hz repetition rate. This system uses a cryogenically-cooled Ti:sapphire final amplifier and generates focused peak intensities in excess of 10
W/cm
.
Bolton, P. R.
no journal, ,
Bulanov, S. V.
no journal, ,
Kiriyama, Hiromitsu; Terranova, F.*; Pegoraro, F.*
no journal, ,
In this paper we discuss the bandwidth enhancement that can be achieved in multi-joule optical parametric chirped pulse amplification (OPCPA) systems exploiting the tenability of parametric amplification. We demonstrate that a bandwidth enhancement up to 50 % is possible using multi-beam operation of OPCPA amplifiers.