We have developed a compact Ti:sapphire laser system operating at variable repetition rates up to 40 kHz. Pulses of 13.2 fs from a cavity-dumped oscillator were amplified further by a seven-pass confocal amplifier, and after compression 23.8-fs pulses with a maximum pulse energy of 1.25 µJ at 10 kHz and more than 100 nJ at 25 kHz were generated. A new prismless cavity-dumping oscillator configuration was designed with the use of negatively chirped mirrors for dispersion compensation. Application of the developed laser system for nonlinear optical spectroscopy in condensed phase was demonstrated.
© 2005 Optical Society of America
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3410) Lasers and laser optics : Laser resonators
(140.4050) Lasers and laser optics : Mode-locked lasers
(140.7090) Lasers and laser optics : Ultrafast lasers
Nickolai Zhavoronkov, Hiroaki Maekawa, Hiroaki Okuno, and Keisuke Tominaga, "All-solid-state femtosecond multi-kilohertz laser system based on a new cavity-dumped oscillator design," J. Opt. Soc. Am. B 22, 567-571 (2005)