Non-contact detection of underwater objects through the laser-induced acoustic source

J. Yellaiah; P. Prem Kiran; P. Prem Kiran

doi:10.1364/FIO.2020.JTu1A.51

Frontiers in Optics / Laser Science
OSA Technical Digest (Optica Publishing Group, 2020),
paper JTu1A.51
•https://doi.org/10.1364/FIO.2020.JTu1A.51

Non-contact detection of underwater objects through the laser-induced acoustic source

J. Yellaiah and P. Prem Kiran

Frontiers in Optics 2020

Washington, DC United States
14–17 September 2020
ISBN: 978-1-943580-80-4

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Joint Poster Session IIA (JTu1A)

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J. Yellaiah and P. P. Kiran, "Non-contact detection of underwater objects through the laser-induced acoustic source," in Frontiers in Optics / Laser Science, B. Lee, C. Mazzali, K. Corwin, and R. Jason Jones, eds., OSA Technical Digest (Optica Publishing Group, 2020), paper JTu1A.51.

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Abstract

The time-frequency analysis of acoustic signals from nanosecond laser-induced breakdown of water revealed a broad spectrum. Impedance mismatch due to an object and water-air interface modified the reflected spectrum leading to non-contact detection.

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