Controlled polarization switching in intra-cavity contacted VCSELs

L. M. Augustin, R. C. Strijbos, E. Smalbrugge, E. J. Geluk, F. Karouta, T. G.V.D. Roer, G. Verschaffelt, H. Thienpont, Kent D Choquette

Research output: Contribution to journalConference articlepeer-review


We have investigated the potential of asymmetric current injection for polarization switching in GaAs-based intracavity contacted vertical cavity surface emitting lasers using two sets of p- and n-contacts per device. We simulated the current paths in both symmetric and asymmetric contacted devices. A large lateral current component is present in the asymmetric case; this induces a certain anisotropy in comparison to the symmetric case, possibly able to stabilize the polarization in one direction. Intra-cavity devices are processed on a standard air-post VCSEL wafer. When using the contacts set along the direction, the polarization was set along while using the contacts along the polarization switches from the direction along to a direction making an angle of 25° to 90° towards. This peculiar result can be explained by the fact that the used VCSEL structure is not designed for intra-cavity contacting.

Original languageEnglish (US)
Pages (from-to)84-91
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2002
EventVCSELs and Optical Interconnects - Brugge, Belgium
Duration: Oct 30 2002Nov 1 2002


  • Asymmetric current injection
  • Intra-cavity VCSEL
  • Polarization
  • Polarization switching
  • Semiconductor lasers

ASJC Scopus subject areas

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


Dive into the research topics of 'Controlled polarization switching in intra-cavity contacted VCSELs'. Together they form a unique fingerprint.

Cite this