An actively mode-locked, continuous-wave Nd:glass laser pumped by a krypton laser at 0.8 μm has been coupled to a nonlinear external resonator. The 20-psec pulses produced by active mode locking are shortened to less than 1 psec with the nonlinear external cavity feedback. Subpicosecond pulse generation has been achieved at a pump power as low as 500 mW.
© 1990 Optical Society of America
Original Manuscript: January 29, 1990
Manuscript Accepted: April 12, 1990
Published: July 1, 1990
F. Krausz, Ch. Spielmann, T. Brabec, E. Wintner, and A. J. Schmidt, "Subpicosecond pulse generation from a Nd:glass laser using a nonlinear external cavity," Opt. Lett. 15, 737-739 (1990)