Researchers Print Blue Lasers on Silicon Nitride Chips

Integrating high-performance blue light sources onto silicon nitride photonic circuits previously presented key hurdles due to limitations in existing bonding techniques. Micro-transfer printed blue lasers have now been realised on a silicon nitride platform, overcoming challenges associated with releasing devices from their original substrate via optimised electrochemical etching. The technique efficiently integrates blue lasers onto silicon nitride chips by moving tiny light sources from their original substrate onto a new platform. This advancement addresses longstanding difficulties in combining gallium nitride laser components with existing chip technology, enabling more…