Visible Y-junction diode laser with mixed coupling

Abstract
An experimental study and theoretical analysis of a phase‐locked, visible, λ=670 nm, 2‐3 Y‐junction semiconductor laser array are presented. In a ridgetype 2‐3 Y‐junction, AlInGaP/InGaP array, both in‐phase and anti‐phase array modes are observed to lase simultaneously. The experimental results are discussed in the framework of a model based on the beam propagation method. The influence of the presence of both interferometric and evanescent coupling on the array modes is analyzed.