Post-processing of vertical-cavity surface-emitting lasers for transverse mode and polarization control

L. Raddatz, P. Dowd, Y. Sumaila, I. H. White, R. V. Penty, P. J. Heard, G. C. Allen, M. R.T. Tan, S. Y. Wang

Research output: Contribution to journalConference articlepeer-review

Abstract

The operation on how high quality single-mode operation can be readily attained on etching circles in multimode devices is discussed. Arrays of such spots can also be envisaged. Control of the polarization state is also achieved by use of deep line etches. The output filaments and beam shapes of the conventional multimode vertical cavity surface emitting lasers (VCSEL) is shown to be engineered in terms of their positions, widths, and polarizations by use of focused ion beam etching (FIBE). Several GaAs quantum well top-emitting devices with cavity diameters of 10 μm and 18 μm were investigated.

Original languageEnglish
Number of pages1
JournalConference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS
Volume11
Publication statusPublished - 1 Jan 1997
EventProceedings of the 1997 Conference on Lasers and Electro-Optics, CLEO - Baltimore, MD, USA
Duration: 18 May 199723 May 1997

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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