High power single transverse mode selectively oxidized VCSELs

In summary, a tapered oxide layer positioned at a field null produces reduced optical confinement and optical loss, in spite of large thickness, and maintains efficient electrical confinement. In this manner the optical and electrical confinement derived from the buried oxide can be decoupled for design of specific vertical surface emitting laser (VCSEL) performance, such as enabling high single transverse mode output power.