Patent ID: 7099362

Claim:
A vertical cavity surface emitting laser comprising: a substrate; a first mirror stack over the substrate; an active region having a plurality of quantum wells over the first mirror stack; a tunnel junction over the active region, the tunnel junction including: a p-layer that includes a modulation doped layer comprising an AlInAs layer epitaxially grown as a digital alloy of p-type doped AlAs and InAs; and an n-layer that includes an n-layer of a compound selected from the group consisting of InP, AlInAs, AlInGaAs, InGaAsP, GaAs, AlAs, AlGaAs, InGaAs, AlGaAsSb, GaAsSb, AlAsSb, AlPSb, GaPSb, AlGaPSb, and combinations thereof; and a second mirror stack over the tunnel junction.