Ultrasound sensing by coherent multi-heterodyne interferometry using electro-optic frequency combs

Xudong Guo; Mingsheng Li; Huajun Tang; Yue Xu; Wei-Ning Lee; Yitian Tong; Kenneth K. Y. Wong; Kenneth K. Y. Wong

doi:10.1364/CLEO_AT.2022.AM3M.6

Conference on Lasers and Electro-Optics
Technical Digest Series (Optica Publishing Group, 2022),
paper AM3M.6
•https://doi.org/10.1364/CLEO_AT.2022.AM3M.6

Ultrasound sensing by coherent multi-heterodyne interferometry using electro-optic frequency combs

Xudong Guo, Mingsheng Li, Huajun Tang, Yue Xu, Wei-Ning Lee, Yitian Tong, and Kenneth K. Y. Wong

CLEO: Applications and Technology 2022

San Jose, California United States
15–20 May 2022
ISBN: 978-1-957171-05-0

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Design and Application of Acoustic and Ultrasound Sensors (AM3M)

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X. Guo, M. Li, H. Tang, Y. Xu, W. Lee, Y. Tong, and K. K. Y. Wong, "Ultrasound sensing by coherent multi-heterodyne interferometry using electro-optic frequency combs," in Conference on Lasers and Electro-Optics, Technical Digest Series (Optica Publishing Group, 2022), paper AM3M.6.

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Abstract

We present a dual-comb interferometer to achieve high-sensitivity ultrasound detection. An 8 dB signal-to-noise ratio improvement has been achieved owing to the coherent accumulation of multi-comb tones, and the sensitivity is improved to 35 mrad/kPa.

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