Abstract

We have experimentally demonstrated a dual-wavelength synchronously mode-locked Nd:CNGG laser based on the semiconductor saturable absorber mirror technique. Mode locking was achieved simultaneously on two gain bands of the crystal that have a central wavelength separation of 2.4nm. The fundamental mode-locked pulse train has a repetition rate of 88MHz and pulse duration of 5ps, with an average output power of 90mW. Autocorrelation measurements show that each of the synchronously mode-locked pulses consists of a train of quasi-periodic beat pulses with a 660fs pulse width and a 0.63THz repetition rate.

© 2008 Optical Society of America

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