Optimizing Temperature Variation in Gallium-Nitride One-Dimensional Laser Array

We propose a novel approach to address the issue of uneven temperature distribution in laser arrays, specifically in gallium nitride edge-emitting lasers emitting green light of 540 nm. We can control thermal crosstalk by adjusting the placement of the emitters within the array and the size of the upper gold cap, without changing the overall dimensions of the device. The proposed design alterations facilitate heat dissipation from inner emitters, ensuring an even temperature distribution across the array without the need for an active control system. This method is significant for achieving cost-effective high-power devices, particularly beneficial for green lasers where heating effects are a major concern.