Abstract
It is numerically demonstrated that on-axis current channeling through
the use of a photoactive layer or layers in vertical-cavity surface-emitting
laser cavities counteracts hole burning and allows single-mode operation at
high currents. The photoactive layers act as a variable-resistivity screen
whose radial aperture is controlled by the light itself. Absorption of a small
fraction of the light intensity suffices for significant on-axis current peaking
with minimum efficiency loss and optical mode distortion.
© 1999 Optical Society of America
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