2-D phased-locked antiguided vertical cavity surface emitting laser arrays

We demonstrate that 2D (4x4) VCSEL arrays can be designed to operate in a stable in-phase mode in good agreement with theory. Calculations show resonant couplings for the in-phase (out-of-phase) mode occurs when the inter-element spacing corresponds to an odd (even) integral number of half-waves of the antiguide. It consists of 27.5 pairs of AlAs-GaAs n-DBR, 23 pairs of AlGaAs-GaAs p-DBR and an optical cavity which includes 3-InGaAs quantum wells, GaAs barrier layers, and AlGaAs confinement layers for 980nm emission.