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Proceedings Paper

High-frequency beam steering induced by transverse mode switching in VCSELs: optical gain effects
Author(s): Angel Valle; Paul C. T. Rees; Luis Pesquera; Keith Alan Shore
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Paper Abstract

Static and dynamic characteristics of weakly index guided VCSELs in a multi-transverse mode regime are analyzed by using a model that takes into account all the transverse modes supported by the waveguide and a consistent spectral gain including many-body effects. Selection of a particular high order transverse mode by using azimuthal dependent current profiling can be obtained over a wide current range. The alternate current modulation of two orthogonal high order transverse modes is studied taking into account thermal effects. This current induced spatial switching leads to high frequency beam steering in the laser azimuthal direction.

Paper Details

Date Published: 29 April 1999
PDF: 12 pages
Proc. SPIE 3627, Vertical-Cavity Surface-Emitting Lasers III, (29 April 1999); doi: 10.1117/12.347090
Show Author Affiliations
Angel Valle, CSIC Instituto de Fisica de Canabria (Spain)
Paul C. T. Rees, Univ. of Wales/Bangor (United States)
Luis Pesquera, CSIC Instituto de Fisica de Cantabria (Spain)
Keith Alan Shore, Univ. of Wales/Bangor (United Kingdom)


Published in SPIE Proceedings Vol. 3627:
Vertical-Cavity Surface-Emitting Lasers III
Kent D. Choquette; Chun Lei, Editor(s)

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