SURFACE EMITTING LASER-BASED DEVICE FOR LIGHT DETECTION AND RANGING

Abstract: a device is described that includes a lens, a photonic substrate, and a surface emitting laser mounted and a set of photodetectors mounted on the photonic substrate. the photonic substrate includes a first surface coupler, a second surface coupler, and an interference coupler. the surface emitting laser emits electromagnetic radiation that is modulated according to a continuous wave frequency modulation. the first surface coupler directs a local oscillator portion of the electromagnetic radiation toward the set of photodetectors. the second surface coupler directs, toward the set of photodetectors, a signal portion of the electromagnetic radiation that is reflected from a target and received via the lens. the interference coupler optically interferes the local oscillator portion from the first surface coupler with the signal portion from the second surface coupler to generate a set of optical outputs that are provided to the set of photodetectors.

Inventor(s): Fei Tan, Nurul Islam, Keith Lyon, Chin-Han Lin, Pengfei Qiao, Alexander Hein

CPC Classification: G01S7/4811 ({common to transmitter and receiver})

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