Single-mode operation of vertical-cavity surface-emitting lasers is difficult to achieve over a wide dynamic range. Several techniques have been used in the past with various degrees of success to suppress oscillation in higher order modes. This includes oxide-confined structures, anti-guided structures, etched surface-relief structures and external-cavity spatially filtered structures. In an earlier paper, we demonstrated a shadow-masked MOCVD technique for growing curved Bragg mirror stacks. This was proposed as a possible technique for enhancing the single-mode properties of oxide-confined VCSELs. In this paper, we present numerical simulation results to demonstrate the effectiveness of this technique.
Enhancement of lateral mode confinement in VCSELs using curved Bragg mirrors
01.01.2001
176838 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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