Compact phase-shifted Sagnac interferometer for ultrasound detection

P. A. Fomitchov; S. Krishnaswamy; J. D. Achenbach

doi:10.1016/S0030-3992(97)00013-3

Compact phase-shifted Sagnac interferometer for ultrasound detection

P. A. Fomitchov^*, S. Krishnaswamy, J. D. Achenbach

^*Corresponding author for this work

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

39 Scopus citations

Abstract

A compact fibre, phase-shifted Sagnac interferometer for ultrasound detection has been developed. The interferometer is a truly path-matched device, and therefore requires no path stabilization or heterodyning. It is a less expensive and more robust alternative to the heterodyne or path-stabilized Michelson interferometer. The device provides high spatial resolution of ultrasonic detection. It has been used in conjunction with conventional piezoelectric transducers (PZT) to detect Rayleigh and Lamb waves and to image a crack in a thin plate, rivet cracks in riveted plates, and for ultrasonic beam profiling.

Original language	English (US)
Pages (from-to)	333-338
Number of pages	6
Journal	Optics and Laser Technology
Volume	29
Issue number	6
DOIs	https://doi.org/10.1016/S0030-3992(97)00013-3
State	Published - Sep 1997

Keywords

Laser-based ultrasonics
Non-destructive evaluation
Sagnac interferometers

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1016/S0030-3992(97)00013-3

Cite this

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title = "Compact phase-shifted Sagnac interferometer for ultrasound detection",

abstract = "A compact fibre, phase-shifted Sagnac interferometer for ultrasound detection has been developed. The interferometer is a truly path-matched device, and therefore requires no path stabilization or heterodyning. It is a less expensive and more robust alternative to the heterodyne or path-stabilized Michelson interferometer. The device provides high spatial resolution of ultrasonic detection. It has been used in conjunction with conventional piezoelectric transducers (PZT) to detect Rayleigh and Lamb waves and to image a crack in a thin plate, rivet cracks in riveted plates, and for ultrasonic beam profiling.",

keywords = "Laser-based ultrasonics, Non-destructive evaluation, Sagnac interferometers",

author = "Fomitchov, {P. A.} and S. Krishnaswamy and Achenbach, {J. D.}",

note = "Funding Information: This material is based upon work performed at Northwestern University for the FAA Center for Aviation Systems Reliability operated by Iowa State University and supported by the Federal Aviation Administration under Grant No. 93-G-018.",

year = "1997",

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doi = "10.1016/S0030-3992(97)00013-3",

language = "English (US)",

volume = "29",

pages = "333--338",

journal = "Optics and Laser Technology",

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T1 - Compact phase-shifted Sagnac interferometer for ultrasound detection

AU - Fomitchov, P. A.

AU - Krishnaswamy, S.

AU - Achenbach, J. D.

N1 - Funding Information: This material is based upon work performed at Northwestern University for the FAA Center for Aviation Systems Reliability operated by Iowa State University and supported by the Federal Aviation Administration under Grant No. 93-G-018.

PY - 1997/9

Y1 - 1997/9

N2 - A compact fibre, phase-shifted Sagnac interferometer for ultrasound detection has been developed. The interferometer is a truly path-matched device, and therefore requires no path stabilization or heterodyning. It is a less expensive and more robust alternative to the heterodyne or path-stabilized Michelson interferometer. The device provides high spatial resolution of ultrasonic detection. It has been used in conjunction with conventional piezoelectric transducers (PZT) to detect Rayleigh and Lamb waves and to image a crack in a thin plate, rivet cracks in riveted plates, and for ultrasonic beam profiling.

AB - A compact fibre, phase-shifted Sagnac interferometer for ultrasound detection has been developed. The interferometer is a truly path-matched device, and therefore requires no path stabilization or heterodyning. It is a less expensive and more robust alternative to the heterodyne or path-stabilized Michelson interferometer. The device provides high spatial resolution of ultrasonic detection. It has been used in conjunction with conventional piezoelectric transducers (PZT) to detect Rayleigh and Lamb waves and to image a crack in a thin plate, rivet cracks in riveted plates, and for ultrasonic beam profiling.

KW - Laser-based ultrasonics

KW - Non-destructive evaluation

KW - Sagnac interferometers

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JO - Optics and Laser Technology

JF - Optics and Laser Technology

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ER -

Compact phase-shifted Sagnac interferometer for ultrasound detection

Abstract

Keywords

ASJC Scopus subject areas

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