Mixed transverse modes in coupled-cavity VCSELs

Leszek Frasunkiewicz, Tomasz Czyszanowski, Kent D Choquette, Krassimir Panajotov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present experimental results showing alternating lasing and non-lasing regions for the short-wavelength longitudinal mode in a GaAs-based 850 nm coupled-cavity vertical-cavity surface-emitting laser (CC-VCSEL). These regions are situated between the laser threshold and roll-off for this mode. The analyzed structure consists of two identical AlGaAs cavities with GaAs quantum wells, separated with 11.5 pairs of middle DBR. The current apertures are realized by ion-implantation for the top cavity and selective oxidation for the bottom cavity. We then perform fully-vectorial three-dimensional cold-cavity optical simulations to theoretically investigate optical density radial and on-optical-axis profiles of the first order transverse modes corresponding to the two longitudinal modes. We show that the short-wavelength fundamental mode λS-LP01 is subject to periodic changes of its optical field distribution when changing the oxide aperture radius, which can lead to weaker resonance of the short-wavelength LP01 mode within the coupled cavity structure.

Original languageEnglish (US)
Title of host publicationSemiconductor Lasers and Laser Dynamics VII
EditorsAngel Valle, Rainer Michalzik, Krassimir Panajotov, Marc Sciamanna
PublisherSPIE
ISBN (Electronic)9781510601376
DOIs
StatePublished - Jan 1 2016
EventSemiconductor Lasers and Laser Dynamics VII - Brussels, Belgium
Duration: Apr 4 2016Apr 7 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9892
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherSemiconductor Lasers and Laser Dynamics VII
Country/TerritoryBelgium
CityBrussels
Period4/4/164/7/16

Keywords

  • 850 nm light emitter
  • Vertical-Cavity Surface-Emitting Laser
  • coupled cavities
  • numerical simulation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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