Modal analysis of a small surface emitting laser with a selectively oxidized waveguide Lear, Kevin L. ; Choquette, Kent D. ; Schneider, Richard P. ; Kilcoyne, Sean Patrick "This work was supported by the United States Department of Energy under Contract No. DE-AC04-94AL85000." We describe studies of an index-guided ~ 4 × 3 µm2 vertical cavity surface emitting laser with a cw, room temperature 133 µA threshold current and 53% slope efficiency fabricated using selective wet thermal oxidation to provide optical and electrical confinement. While the device operates strictly single mode, a large number of transverse modes are evident in the subthreshold luminescence observed in both vertical and lateral directions. Despite the lumped nature of the index region, the transverse mode wavelengths agree very well with those predicted for a conventional distributed waveguide structure. Waveguide dimensions and an effective index step of 2% between the active and cladding region are determined by fitting the modal data. Colorado State University. Libraries 1995 text ; image application/pdf ECEkll00002.pdf FACFECEN100352ARTI eng c1995 American Institute of Physics
Modal analysis of a small surface emitting laser with a selectively oxidized waveguide
Lear, Kevin L. ; Choquette, Kent D. ; Schneider, Richard P. ; Kilcoyne, Sean Patrick
"This work was supported by the United States Department of Energy under Contract No. DE-AC04-94AL85000."
We describe studies of an index-guided ~ 4 × 3 µm2 vertical cavity surface emitting laser with a cw, room temperature 133 µA threshold current and 53% slope efficiency fabricated using selective wet thermal oxidation to provide optical and electrical confinement. While the device operates strictly single mode, a large number of transverse modes are evident in the subthreshold luminescence observed in both vertical and lateral directions. Despite the lumped nature of the index region, the transverse mode wavelengths agree very well with those predicted for a conventional distributed waveguide structure. Waveguide dimensions and an effective index step of 2% between the active and cladding region are determined by fitting the modal data.
Colorado State University. Libraries
1995
text ; image
application/pdf
ECEkll00002.pdf
FACFECEN100352ARTI
eng
c1995 American Institute of Physics