Stationary ultrashort light pulses of 10-psec duration and with an energy of 10 μJ per pulse were obtained from an active-passive mode-locked Nd:YAG laser by using a two-photon absorption limiter (GaAs) inserted into the resonator. The stability of energy in the steady-state part of the pulse train, containing approximately 90 pulses, is better than ±1.5%. The dynamics of the pulse-shortening mechanism are described, and it is shown that maximum pulse compression is reached after only approximately 10 round trips.
© 1990 Optical Society of America
Original Manuscript: December 11, 1989
Manuscript Accepted: April 1, 1990
Published: July 1, 1990
A. Del Corno, V. Kubecek, J. Marek, G. Gabetta, and G. C. Reali, "Active–passive mode-locked Nd:YAG laser with passive negative feedback," Opt. Lett. 15, 734-736 (1990)