We demonstrate the mode locking of external-cavity semiconductor lasers by using a saturable Bragg reflector as an external reflector. Output pulses of 1.9 ps were generated from the semiconductor lasers without dispersion compensation. By coupling the output to a standard single-mode filter with a length of 35 m to compensate for the linear chirp, we have achieved mode-locked pulse durations as short as 880 fs.
© 1999 Optical Society of America
(140.4050) Lasers and laser optics : Mode-locked lasers
(140.5960) Lasers and laser optics : Semiconductor lasers
(230.1480) Optical devices : Bragg reflectors
(320.5520) Ultrafast optics : Pulse compression
J. L. Shen, T. Jung, S. Murthy, T. Chau, M. C. Wu, D. T. K. Tong, Y. H. Lo, C. L. Chua, and Z. H. Zhu, "Mode locking of external-cavity semiconductor lasers with saturable Bragg reflectors," J. Opt. Soc. Am. B 16, 1064-1067 (1999)