Edge-Emitting Laser Assembly With Substrate Bar Isolation

The substrate is segmented into a base plate and a separate substrate bar that protrudes toward the laser diode. This segmentation creates a physical separation between the laser diode and the base plate, preventing gallium residues from causing direct electrical contact while maintaining structural integrity and electrical connectivity through the substrate bar.

The substrate bar acts as an intermediary element between the laser diode and the base plate. It provides a controlled electrical connection path while maintaining a physical gap that prevents harmful direct contact caused by gallium residues, thus mediating between the need for electrical connectivity and the need for reliability.

The substrate is divided into a base plate and a substrate bar, where the substrate bar serves as the separating element that prevents direct contact between the laser diode and the base plate, thereby preventing short circuits while maintaining a relatively simple overall structure.

The substrate bar performs multiple functions: it provides mechanical separation to prevent short circuits, maintains electrical connectivity between the laser diode and base plate, and supports the laser diode structure. This multi-functionality reduces the need for additional separate components.

The direct connection between the contact layer and base plate is segmented by introducing the substrate bar. The contact layer connects to the substrate bar, which then connects to the base plate, creating an indirect connection that prevents gallium residues from causing direct electrical contact while maintaining manufacturing feasibility.

The substrate bar serves as an intermediary connection element between the contact layer and the base plate. This indirect connection path prevents gallium residues from creating direct electrical contact between the contact layer and base plate, thereby preventing shunts while maintaining a relatively simple manufacturing process.