Interrogating optomechanical ultrasound sensor with on-chip tunable distributed Bragg reflector laser

Abstract

We experimentally demonstrate the use of a micro-transfer-printed on-chip distributed Bragg reflector laser to interrogate an opto-mechanical ultrasound sensor. By eliminating the need for an external tunable laser source, this work presents a scalable pathway toward an all-on-chip photonic platform for high-performance acoustic sensing and imaging.