Abstract

The mechanisms which govern quantum fluctuations in semiconductor lasers are not yet well identified and understood. The analysis of this problem dates back to the sixties starting with the pioneering work of Haug [1]. Much more recently Yamamoto and collaborators [2] introduced their analysis of pump noise suppression, leading to the prediction of large reduction of intensity noise below the shot noise level, for zero frequency high above threshold. The actual level of noise reduction achievable in these systems is still a matter of discussion, and agreement between experimental observations and theoretical predictions has not yet been reached.

© 1998 IEEE