We report a simple and robust Ti:sapphire regenerative amplifier without prepulse stretching. Pulse stretching by positive group-velocity dispersion and negative third-order dispersion are provided by highly dispersive flint glass prisms inside the regenerative amplifier cavity. Using a single-grating compressor, we obtain transform-limited 60-fs Gaussian pulses at up to a 5-kHz repetition rate with energy of 50 μJ/pulse.
© 1995 Optical Society of America
Original Manuscript: July 29, 1994
Published: February 15, 1995
Taiha Joo, Yiwei Jia, and Graham R. Fleming, "Ti:sapphire regenerative amplifier for ultrashort high-power multikilohertz pulses without an external stretcher," Opt. Lett. 20, 389-391 (1995)