By injecting single subnanosecond pulses into a latent ring-laser oscillator, it is possible to generate highly reproducible intense trains of short pulses from a solid-state laser. In this way, 12-psec pulses are available from a highrepetition- rate Nd<sup>3+</sup>:YAG laser, whereas Nd<sup>3+</sup>:phosphate glass reliably produces pulses of <3-psec duration. Further compression of the Nd<sup>3+</sup>:YAG laser pulses can be accomplished by the insertion of a passive phase modulator into the cavity, yielding pulses of ≥5-psec duration and >3-cm<sup>-1</sup> bandwidth.
© 1981 Optical Society of America
Kee-Ju Choi and Michael R. Topp, "Ultrashort pulse generation by Nd3+:glass and Nd3+:YAG lasers," J. Opt. Soc. Am. 71, 520-524 (1981)