DocumentCode :
1102231
Title :
Theory of noise in semiconductor lasers in the presence of optical feedback
Author :
Spano, Paolo ; Piazzolla, Salvatore ; Tamburrini, Mario
Author_Institution :
Fondazione UGO Bordoni, Rome, Italy
Volume :
20
Issue :
4
fYear :
1984
fDate :
4/1/1984 12:00:00 AM
Firstpage :
350
Lastpage :
357
Abstract :
We derive analytical expressions for the power spectral densities of intensity and frequency noise of single mode semiconductor lasers in the presence of an optical feedback. By explicitly taking into account the spontaneous emission processes into the laser mode, we obtain a behavior which, at high frequencies significantly differs from the usual one, and is in good agreement with recent experimental results. In particular, we are able to show in which way the intensity and frequency noise, besides being influenced by the external cavity length, are affected by the presence of the well known resonant peaks in the noise spectra of the solitary laser and how a substantial lowering and flattening in the noise spectra can be obtained with external cavity round trip times shorter than the inverse of the peak resonant frequency. We also present experimental results in good agreement with the theoretical ones.
Keywords :
Feedback lasers; Laser noise; Semiconductor lasers; Frequency; Laser feedback; Laser modes; Laser noise; Laser theory; Optical feedback; Optical noise; Power lasers; Semiconductor device noise; Semiconductor lasers;
fLanguage :
English
Journal_Title :
Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9197
Type :
jour
DOI :
10.1109/JQE.1984.1072403
Filename :
1072403
Link To Document :
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