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Conferences > CLEO_AT > 2016 > AW1J > AW1J.4

Towards Attometer/Hz1/2 Displacement Resolution in DFB Fiber Laser Acoustic Emission Sensors

Geoffrey Cranch, Lee Johnson, Seth Heerschap, Mark Seaver, and Gary Miller

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Abstract

A distributed feedback fiber laser is shown to achieve a displacement resolution approaching 3×10−17 m/Hz1/2 up to 10 MHz (∼ 103 more sensitive than the current state-of-the-art). Detection of acoustic emission events from cracks induced in fatigued lap joints is demonstrated.

© 2016 Optical Society of America

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