Title :
Estimation of linewidth enhancement factor of AlGaAs lasers by correlation measurement between FM and AM noises
Author :
Kikuchi, K. ; Okoshi, T.
Author_Institution :
Dept. of Electronic Engrg., Univ. of Tokyo, Tokyo, Japan
fDate :
6/1/1985 12:00:00 AM
Abstract :
A novel method for estimating the linewidth enhancement factor α of semiconductor lasers has been developed. In this method, the spectrum of the correlation between FM and AM noises is measured in a frequency range where the spontaneous emission noise is dominant, and then the α value is calculated from the measured correlation. The α value of channeled-substrate-planar AlGaAs lasers has been estimated to be 2.2-2.8.
Keywords :
AM noise; Correlations; FM noise; Gallium materials/lasers; Laser noise; Charge carrier density; Frequency measurement; Frequency modulation; Laser noise; Laser theory; Noise measurement; Semiconductor device noise; Semiconductor lasers; Spontaneous emission; State estimation;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.1985.1072724
