Increased threshold for the first-order lateral mode lasing in low-ridge waveguide high power QW lasers

A self-consistent two-dimensional model is extended to include two-mode operation and is applied to study the characteristics of ridge-waveguided high power InGaAs-GaAs quantum-well lasers. This work provides physical insight into the most recent experimental result that use low-ridges and thin p-claddings to give high single lateral mode output and a low threshold.