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Abstract Chip-scale integration is a key enabler for the deployment of photonic technologies. Coherent laser ranging or FMCW LiDAR, a perception technology that benefits from instantaneous velocity and distance detection, eye-safe operation, long-range, and immunity to interference. However, wafer-scale integration of these systems has been challenged by stringent requirements on laser coherence, frequency agility, and the necessity for optical amplifiers. Here, we demonstrate a photonic-electronic LiDAR source composed of a micro-electronic-based high-voltage arbitrary waveform generator, a hybrid photonic circuit-based tunable Vernier laser with piezoelectric actuators, and an erbium-doped waveguide amplifier. Importantly, all systems are realized in a wafer-scale manufacturing-compatible process comprising III-V semiconductors, silicon nitride photonic integrated circuits, and 130-nm SiGe bipolar complementary metal-oxide-semiconductor (CMOS) technology. We conducted ranging experiments at a 10-meter distance with a precision level of 10 cm and a 50 kHz acquisition rate. The laser source is turnkey and linearization-free, and it can be seamlessly integrated with existing focal plane and optical phased array LiDAR approaches.
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Anton Lukashchuk
École Polytechnique Fédérale de Lausanne
Halil Kerim Yildirim
École Polytechnique Fédérale de Lausanne
Andrea Bancora
École Polytechnique Fédérale de Lausanne
Nature Communications
École Polytechnique Fédérale de Lausanne
Purdue University West Lafayette
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Lukashchuk et al. (Thu,) studied this question.
synapsesocial.com/papers/68e6f722b6db643587672103 — DOI: https://doi.org/10.1038/s41467-024-47478-z
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