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Report No.

Development of broadband nonlinear preamplifier for laser-diode-pumped Yb:YAG CPA laser system

Suzuki, Masayuki; Kiriyama, Hiromitsu; Daito, Izuru; Okada, Hajime; Sato, Masatoshi*; Yoshii, Takehiro*; Tamaoki, Yoshinori*; Maeda, Junya*; Matsuoka, Shinichi*; Kan, Hirofumi*; Bolton, P.; Daido, Hiroyuki; Kawanishi, Shunichi

We have demonstrated amplification of 1030 nm broadband chirped-pulses from an ytterbium (Yb) femtosecond oscillator to over 6.5 mJ with a total gain of greater than 10$$^{7}$$ achieved by a single pass through only 56 mm of gain material at a 10 Hz repetition rate. The amplified broad bandwidth of 10.8 nm affords recompression to a 230 fs pulse duration following amplification. This novel system is a promising alternative to the RA as a nonlinear preamplifier for compact, high intensity, Yb:YAG CPA laser using DPPSL systems.



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