Generation of intense femtosecond optical pulses near 3 mu m with a kilohertz repetition rate

摘要

A simple extension of a commercial laser system permits the generation of intense femtosecond infrared pulses near 3 mu m by optical parametric generation and amplification at kilohertz repetition rates. Pulse durations of a few hundred femtoseconds and pulse energies of tens of microjoules can be routinely produced, thus permitting nonlinear optical studies of molecular vibrations. (C) 1997 Optical Society of America