Spatial modes of a concentric-circle-grating surface-emitting, AlGaAs/GaAs quantum well semiconductor laser
- 13 April 1992
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 60 (15), 1773-1775
- https://doi.org/10.1063/1.107211
Abstract
We demonstrate the fabrication and operation of an AlGaAs surface-emitting semiconductor laser, grown by molecular-beam epitaxy, that incorporates a circularly symmetric grating of period Λ=0.25 μm fabricated using electron-beam lithography. Azimuthal variations in the grating linewidth have a significant impact on the spatial modes of the laser.Keywords
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