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Proceedings Paper

Single-mode VCSEL operation via photocurrent feedback
Author(s): Spilios Riyopoulos
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Paper Abstract

On-axis channeling through the use of photoactive layers in VCSEL cavities is proposed to counteract hole burning and mode switching. The photoactive layers act as variable resistivity screens whose radial `aperture' is controlled by the light itself. It is numerically demonstrated that absorption of a small fraction of the light intensity suffices for significant on axis current peaking and single mode operation at currents many times threshold, with minimum efficiency loss and optical mode distortion. Fabrication is implemented during the molecular beam epitaxy phase without wafer post processing, as for oxide apertures.

Paper Details

Date Published: 29 April 1999
PDF: 11 pages
Proc. SPIE 3627, Vertical-Cavity Surface-Emitting Lasers III, (29 April 1999); doi: 10.1117/12.347102
Show Author Affiliations
Spilios Riyopoulos, Science Applications International Corp. (United States)

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

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