Multimillijoule optical parametric chirped-pulse amplifier as an alternative to Yb:YAG regenerative amplifiers at 1030 nm
波長1030nmYb:YAG再生増幅器にかわる数mJ光パラメトリックチャープパルス増幅
鈴木 将之; 桐山 博光; 大東 出; 岡田 大; 佐藤 方俊*; 松岡 伸一*; 吉井 健裕*; 菅 博文*; Bolton, P.; 大道 博行; 河西 俊一
Suzuki, Masayuki; Kiriyama, Hiromitsu; Daito, Izuru; Okada, Hajime; Sato, Masatoshi*; Matsuoka, Shinichi*; Yoshii, Takehiro*; Kan, Hirofumi*; Bolton, P.; Daido, Hiroyuki; Kawanishi, Shunichi
We have demonstrated amplification of broadband 1030 nm pulses broadband ytterbium (Yb) femtosecond oscillator pulses from an ytterbium femtosecond oscillator to over 6.5 mJ with a total gain of greater than 10 achieved by a single pass through only 56 mm of gain material at a 10 Hz repetition rate. Spectral broadening and associated pulse shaping are optimized in the OPCPA unit by the phase matching established using the BBO tuning angle. As an alternative to the regenerative amplifier (RA) this system is one of the more promising candidates for realizing compact, high intensity, direct diode pumped, high repetition rate femtosecond Yb:YAG chirped-pulse amplification (CPA) in laser systems.