We study the feedback-induced instabilities in a quantum dot semiconductor laser emitting in both ground and excited states. Without optical feedback the device exhibits dynamics corresponding to antiphase fluctuations between ground and excited states, while the total output power remains constant. The introduction of feedback leads to power dropouts in the ground state and intensity bursts in the excited state, resulting in a practically constant total output power.
© 2006 Optical Society of America
Lasers and Laser Optics
Original Manuscript: April 18, 2006
Revised Manuscript: May 12, 2006
Manuscript Accepted: May 16, 2006
Published: July 10, 2006
Evgeny A. Viktorov, Paul Mandel, Ian O'Driscoll, Olwen Carroll, Guillaume Huyet, John Houlihan, and Yann Tanguy, "Low-frequency fluctuations in two-state quantum dot lasers," Opt. Lett. 31, 2302-2304 (2006)