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Proceedings Paper

Effects of optical feedback with dispersive loss on the amplitude noise and relaxation resonance of semiconductor lasers
Author(s): John E. Kitching; Richard Boyd; Amnon Yariv; Yaakov Shevy
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Paper Abstract

Optical feedback from an external cavity containing an element of dispersive loss was used to reduce the amplitude noise of a semiconductor laser. At feedback levels of Pfb/Pout approximately equals 10+-2), a maximum amplitude noise reduction of 16 decibel was measured close to threshold but the potiential for reduction was reduced considerably at higher injection currents as the laser noise approached the shot noise limit. In addition, the threshold current decreased and the linewidth was reduced to 10 kilohertz. The relaxation oscillation peak in the amplitude noise spectrum was also found to be dramatically suppressed and we find evidence that the relaxation resonance can be moved to much higher frequencies using optical feedback techniques.

Paper Details

Date Published: 30 June 1994
PDF: 8 pages
Proc. SPIE 2146, Physics and Simulation of Optoelectronic Devices II, (30 June 1994); doi: 10.1117/12.178520
Show Author Affiliations
John E. Kitching, California Institute of Technology (United States)
Richard Boyd, California Institute of Technology (United States)
Amnon Yariv, California Institute of Technology (United States)
Yaakov Shevy, Univ. of Miami (United States)

Published in SPIE Proceedings Vol. 2146:
Physics and Simulation of Optoelectronic Devices II
Weng W. Chow; Marek Osinski, Editor(s)

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