An electrically pumped, long-wavelength VCSEL includes a long wavelength active region having electrical contacts on opposed sides thereof. A layer of semiconductor material is included in the active region having an electrically conductive portion defining a lasing aperture and current confinement volume...http://www.google.es/patents/US6542530?utm_source=gb-gplus-sharePatente US6542530 - Electrically pumped long-wavelength VCSEL and methods of fabrication
Electrically pumped long-wavelength VCSEL and methods of fabrication