Current crowding in oxide-confined intracavity-contacted VCSELs

R.C. Strijbos, L.M. Augustin, T.G. Roer, van de

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Abstract

An important problem for intracavity-contacted oxide-confined Vertical-Cavity Surface-Emitting Lasers (ICOC-VCSELs) is current crowding at the inner edges of the oxide current constrictions, which introduces extra losses and leads to excitation of unwanted higher-order transverse modes. We have proposed novel ’asymmetric’ ICOC-VCSELs, where the contact metallisations are restricted to opposite mesa sides, for more homogeneous current injection and polarisation control. Here, results of simple 2D drift-diffusion calculations are presented for symmetric and asymmetric ICOC-VCSELs. Current crowding in our ’asymmetric’ devices is reduced, but depends on the design of the layer structure.
Original languageEnglish
Title of host publicationProceedings of the 5th annual symposium of the IEEE/LEOS Benelux Chapter : October 30, 2000, Delft , the Netherlands
EditorsX.J.M. Leijtens, J.H. Besten, den
Place of PublicationDelft
PublisherDelft University of Technology
Pages223-226
ISBN (Print)90-9014260.6
Publication statusPublished - 2000
Event5th Annual Symposium of the IEEE/LEOS Benelux Chapter - Delft, Netherlands
Duration: 30 Oct 200030 Oct 2000

Conference

Conference5th Annual Symposium of the IEEE/LEOS Benelux Chapter
CountryNetherlands
CityDelft
Period30/10/0030/10/00
OtherIEEE/LEOS symposium

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