Low-noise, frequency-agile, hybrid integrated lasers for LiDAR

Grigory Lihachev; Johann Riemensberger; Wenle Weng; Junqiu Liu; Hao Tian; Anat Siddharth; Viacheslav S. Snigirev; Rui Ning Wang; Sunil A. Bhave; Tobias J. Kippenberg

doi:10.1117/12.2597942

12 September 2021 Low-noise, frequency-agile, hybrid integrated lasers for LiDAR

Grigory Lihachev, Johann Riemensberger, Wenle Weng, Junqiu Liu, Hao Tian, Anat Siddharth, Viacheslav S. Snigirev, Rui Ning Wang, Sunil A. Bhave, Tobias J. Kippenberg

Author Affiliations +

Proceedings Volume 11868, Emerging Imaging and Sensing Technologies for Security and Defence VI; 118680B (2021) https://doi.org/10.1117/12.2597942
Event: SPIE Security + Defence, 2021, Online Only

Abstract

We demonstrate a hybrid photonic integrated laser that exhibits an intrinsic linewidth of 40 Hz, while offering unsurpassed megahertz actuation bandwidth with the tuning range larger than 1 GHz, attained by a DFB laser self-injection locking to a high-Q Si3N4 microresonator with AlN piezoelectrical actuator, allowing both single-line operation and microcomb generation. We develop a compact FMCW LiDAR engine with triangular chirp optical signals at a rate up to 1 MHz, without requiring any linearisation.

Conference Presentation

Citation Download Citation

Grigory Lihachev, Johann Riemensberger, Wenle Weng, Junqiu Liu, Hao Tian, Anat Siddharth, Viacheslav S. Snigirev, Rui Ning Wang, Sunil A. Bhave, and Tobias J. Kippenberg "Low-noise, frequency-agile, hybrid integrated lasers for LiDAR", Proc. SPIE 11868, Emerging Imaging and Sensing Technologies for Security and Defence VI, 118680B (12 September 2021); https://doi.org/10.1117/12.2597942

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