Dual-laser chip-scale lidar for simultaneous range-doppler sensing

A chip-scale lidar system includes a first light source to output a first signal, and a second light source to output a second signal. A transmit beam coupler provides an output signal for transmission that includes a portion of the first signal and a portion of the second signal, and receive beam c...

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Bibliographische Detailangaben
Hauptverfasser:	Kremer, Richard, Sayyah, Keyvan
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES BASIC ELECTRIC ELEMENTS DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES DEVICES USING STIMULATED EMISSION ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICALDEVICES MICROSTRUCTURAL TECHNOLOGY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION SEMICONDUCTOR DEVICES TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	A chip-scale lidar system includes a first light source to output a first signal, and a second light source to output a second signal. A transmit beam coupler provides an output signal for transmission that includes a portion of the first signal and a portion of the second signal, and receive beam coupler obtains a received signal resulting from reflection of the output signal by a target. The system includes a first and second set of photodetectors to obtain a first and second set of electrical currents from a first and second set of combined signals including a first and second portion of the received signal. A processor obtains Doppler information about the target from the second set of electrical currents and obtains range information about the target from the first set of electrical currents and the second set of electrical currents.