Title :
Facet reflectivity and low-frequency noise in the light output of LED and superradiant diodes
Author_Institution :
Eindhoven Univ. of Technol., Netherlands
fDate :
7/1/1989 12:00:00 AM
Abstract :
The influence of the reflection coefficient of cleaved facets from a double heterostructure laser on the l/f noise in light output is investigated. The experimental noise results are obtained by partially embedding the laser in Canada balsam, resulting in a decrease of the reflection coefficient, and by evaporating an aluminum coating, which results in a fully reflecting facet. These experimental results are shown to be in full agreement with an extension of existing models proposed by Fronen and Vandamme (l988). The 1/f noise arising from fluctuations in the refractive index is calculated, and it is concluded that this noise is negligible compared to the bulk noise in semiconductor lasers
Keywords :
electron device noise; light emitting diodes; random noise; reflectivity; refractive index; semiconductor junction lasers; superradiance; Al; Canada balsam; LED; aluminum coating; bulk noise; cleaved facets; double heterostructure laser; facet reflectivity; l/f noise; light output; low-frequency noise; reflection coefficient; refractive index; semiconductor lasers; superradiant diodes; Acoustic reflection; Aluminum; Coatings; Fluctuations; Laser modes; Laser noise; Low-frequency noise; Optical reflection; Reflectivity; Semiconductor device noise;
Journal_Title :
Quantum Electronics, IEEE Journal of
