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Proceedings Paper

Controlled polarization switching in intracavity contacted VCSELs
Author(s): Luc M. Augustin; Remco C. Strijbos; Barry Smalbrugge; E.-J. Geluk; Fouad Karouta; Theo G. van de Roer; Guy Verschaffelt; Hugo Thienpont; Kent D. Choquette
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Paper Abstract

We have investigated the potential of asymmetric current injection for polarization switching in GaAs-based intra-cavity 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 [1-10] direction, the polarization was set along [110] while using the contacts along [110] the polarization switches from the direction along [110] to a direction making an angle of 25° to 90° towards [110]. This peculiar result can be explained by the fact that the used VCSEL structure is not designed for intra-cavity contacting.

Paper Details

Date Published: 15 April 2003
PDF: 8 pages
Proc. SPIE 4942, VCSELs and Optical Interconnects, (15 April 2003); doi: 10.1117/12.468395
Show Author Affiliations
Luc M. Augustin, Eindhoven Univ. of Technology (Netherlands)
Remco C. Strijbos, Eindhoven Univ. of Technology (Netherlands)
Barry Smalbrugge, Eindhoven Univ. of Technology (Netherlands)
E.-J. Geluk, Eindhoven Univ. of Technology (Netherlands)
Fouad Karouta, Eindhoven Univ. of Technology (Netherlands)
Theo G. van de Roer, Eindhoven Univ. of Technology (Netherlands)
Guy Verschaffelt, Vrije Univ. Brussel (Belgium)
Hugo Thienpont, Vrije Univ. Brussel (Belgium)
Kent D. Choquette, Univ. of Illinois/Urbana-Champaign (United States)

Published in SPIE Proceedings Vol. 4942:
VCSELs and Optical Interconnects
Hugo Thienpont; Jan Danckaert, Editor(s)

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