ABSTRACT
Selectively oxidized vertical cavity surface emitting lasers(VCSELs) nowadays show low threshold current, low operating voltage, and high conversion efficiency. But due to strong index confinement created by the buried oxide layers, these lasers typically operate in multiple transverse optical modes. High power single mode VCSEL operation would be desirable for many applications, such as optical storage and printing, bar code scanning, and data communication over single mode optical fiber.
