All-optical active mode locking of a picosecond Nd:YVO<sub>4</sub> laser is demonstrated by use of an intracavity semiconductor nonlinear Fabry–Perot mirror. The reflectivity of the Fabry–Perot mirror is modulated by optical carrier injection. Depending on the carrier recombination time, the width of the Nd:YVO<sub>4</sub> laser pulses varies from 6 to 20 ps, as is typical for passively mode-locked Nd:YVO<sub>4</sub> lasers.
© 2002 Optical Society of America
W. Seitz, R. Ell, U. Morgner, T. R. Schibli, F. X. Kärtner, M. J. Lederer, and B. Braun, "All-optical active mode locking with a nonlinear semiconductor modulator," Opt. Lett. 27, 2209-2211 (2002)