Evolution of light-current characteristic shape in high-power semiconductor quantum well lasers

The light-current characteristic (LCC) of semiconductor quantum well lasers is theoretically studied. It is discussed here that, due to internal optical absorption loss, which depends on the electron and hole densities in the optical confinement layer, (i) roll-over of the LCC occurs with increasing...

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Bibliographic Details
Published in:Electronics letters 2019-05, Vol.55 (9), p.550-552
Main Authors: Sokolova, Z.N, Pikhtin, N.A, Asryan, L.V
Format: Article
Language:English
Subjects:
electron density
high‐power semiconductor quantum well lasers
hole densities
hole density
injection current
internal optical absorption loss
laser structures
LCC
light absorption
light‐current characteristic shape
optical confinement layer
optical emission
optical losses
output powers
Photonics
quantum well lasers
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Summary:The light-current characteristic (LCC) of semiconductor quantum well lasers is theoretically studied. It is discussed here that, due to internal optical absorption loss, which depends on the electron and hole densities in the optical confinement layer, (i) roll-over of the LCC occurs with increasing injection current, and, (ii) depending on the parameters of laser structures, the LCC can have two branches, i.e. the optical emission at two different output powers will be possible within a certain range of injection currents.
ISSN:0013-5194
1350-911X
1350-911X
DOI:10.1049/el.2019.0225