title: Direct regenerative amplification of femtosecond pulses to the multimillijoule level.
abstract: We present a compact femtosecond nonlinear Yb:YAG thin-disk regenerative amplifier delivering pulses carried at a wavelength of 1030 nm with an average power of >200  W at a repetition rate of 100 kHz and an energy noise value of 0.46% (rms) in a beam with a propagation factor of M2<1.4. The amplifier is seeded with bandwidth-limited subpicosecond pulses without temporal stretching. We give estimates for the nonlinear parameters influencing the system and show that chirped mirrors compress the 2 mJ pulses to a near-bandwidth-limited duration of 210 fs.
authors: Moritz
authors: M
authors: Ueffing
authors: Robert
authors: R
authors: Lange
authors: Tobias
authors: T
authors: Pleyer
authors: Vladimir
authors: V
authors: Pervak
authors: Thomas
authors: T
authors: Metzger
authors: Dirk
authors: D
authors: Sutter
authors: Zsuzsanna
authors: Z
authors: Major
authors: Thomas
authors: T
authors: Nubbemeyer
authors: Ferenc
authors: F
authors: Krausz