A vertical cavity surface emitting laser (VCSEL) includes independently
definable current and optical confinement structures that provide unique
forms of drive current and transverse mode confinement, respectively. The
optical guide may be formed from an upper distributed Bragg reflector
(DBR), as an etched mesa structure and/or as an intracavity optical
guide. The current guide may include an ion-implanted region within the
upper DBR. A dielectric structure is formed over the upper DBR and
surrounds the optical guide.