A self-starting stretched-pulse mode-locked erbium-doped fiber laser that uses fast and slow semiconductor saturable absorbers is described. By using two absorbers, we obtained reliable operation at a fundamental repetition rate with 250 pJ of pulse energy without multiple-pulse breakup. External chirp compensation was used to compress the highly chirped pulses to durations of 135 fs.
© 2001 Optical Society of America
(230.5590) Optical devices : Quantum-well, -wire and -dot devices
(320.1590) Ultrafast optics : Chirping
(320.5520) Ultrafast optics : Pulse compression
(320.7090) Ultrafast optics : Ultrafast lasers
M. Guina, N. Xiang, A. Vainionpää, O. G. Okhotnikov, T. Sajavaara, and J. Keinonen, "Self-starting stretched-pulse fiber laser mode locked and stabilized with slow and fast semiconductor saturable absorbers," Opt. Lett. 26, 1809-1811 (2001)