We introduce a new extracavity pulse-compression technique suitable for generating high-energy femtosecond pulses. This technique is based on spectral broadening by self-phase modulation in bulk media followed by far-field spatial filtering, which provides a uniform spectral broadening over the spatial profile combined with a transmission of 50%. In principle, this technique allows compression of pulses with energy up to ∼100 mJ by a factor of 3–5. In a proof-of-principle experiment, we compressed a 42-fs, 480-μJ pulse to a 14-fs, 220-μJ pulse.
© 2003 Optical Society of America
E. Mével, O. Tcherbakoff, F. Salin, and E. Constant, "Extracavity compression technique for high-energy femtosecond pulses," J. Opt. Soc. Am. B 20, 105-108 (2003)