Evaluation of high frequency vibrations using electronic speckle pattern interferometry

Vincent Toal; Henry Rice; Craig Meskell; Carol Armstrong; Brian Bowe

doi:10.1117/12.464267

Evaluation of high frequency vibrations using electronic speckle pattern interferometry

Vincent Toal, Henry Rice, Craig Meskell, Carol Armstrong, Brian Bowe

Research output: Contribution to journal › Conference article › peer-review

Abstract

The available techniques for the study of high frequency vibration using electronic speckle pattern interferometry (ESPI) are briefly surveyed. We concentrate on two methods in particular. The first is a straightforward approach in which a CCD camera is used having a frame rate of at least twice the highest vibration frequency so that the sampling criterion is satisfied. The images are processed and analysed off-line. Digital phase shifting can be also implemented for detailed fringe analysis. The second approach is time-averaged ESPI in which the Bessel fringe function can be analysed in real time by modulating the optical path difference in the interferometer. This can be done either by using a vibrating component or, as in the present work, by direct modulation of the laser wavelength at the frequency of the vibrating mode.

Original language	English
Pages (from-to)	1054-1063
Number of pages	10
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4876
Issue number	2
DOIs	https://doi.org/10.1117/12.464267
Publication status	Published - 2002
Event	Opto-Ireland 2002: Optics and Photonics Technologies and Applications - Galway, Ireland Duration: 5 Sep 2002 → 6 Sep 2002

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10.1117/12.464267

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title = "Evaluation of high frequency vibrations using electronic speckle pattern interferometry",

abstract = "The available techniques for the study of high frequency vibration using electronic speckle pattern interferometry (ESPI) are briefly surveyed. We concentrate on two methods in particular. The first is a straightforward approach in which a CCD camera is used having a frame rate of at least twice the highest vibration frequency so that the sampling criterion is satisfied. The images are processed and analysed off-line. Digital phase shifting can be also implemented for detailed fringe analysis. The second approach is time-averaged ESPI in which the Bessel fringe function can be analysed in real time by modulating the optical path difference in the interferometer. This can be done either by using a vibrating component or, as in the present work, by direct modulation of the laser wavelength at the frequency of the vibrating mode.",

author = "Vincent Toal and Henry Rice and Craig Meskell and Carol Armstrong and Brian Bowe",

year = "2002",

doi = "10.1117/12.464267",

language = "English",

volume = "4876",

pages = "1054--1063",

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note = "Opto-Ireland 2002: Optics and Photonics Technologies and Applications ; Conference date: 05-09-2002 Through 06-09-2002",

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TY - JOUR

T1 - Evaluation of high frequency vibrations using electronic speckle pattern interferometry

AU - Toal, Vincent

AU - Rice, Henry

AU - Meskell, Craig

AU - Armstrong, Carol

AU - Bowe, Brian

PY - 2002

Y1 - 2002

N2 - The available techniques for the study of high frequency vibration using electronic speckle pattern interferometry (ESPI) are briefly surveyed. We concentrate on two methods in particular. The first is a straightforward approach in which a CCD camera is used having a frame rate of at least twice the highest vibration frequency so that the sampling criterion is satisfied. The images are processed and analysed off-line. Digital phase shifting can be also implemented for detailed fringe analysis. The second approach is time-averaged ESPI in which the Bessel fringe function can be analysed in real time by modulating the optical path difference in the interferometer. This can be done either by using a vibrating component or, as in the present work, by direct modulation of the laser wavelength at the frequency of the vibrating mode.

AB - The available techniques for the study of high frequency vibration using electronic speckle pattern interferometry (ESPI) are briefly surveyed. We concentrate on two methods in particular. The first is a straightforward approach in which a CCD camera is used having a frame rate of at least twice the highest vibration frequency so that the sampling criterion is satisfied. The images are processed and analysed off-line. Digital phase shifting can be also implemented for detailed fringe analysis. The second approach is time-averaged ESPI in which the Bessel fringe function can be analysed in real time by modulating the optical path difference in the interferometer. This can be done either by using a vibrating component or, as in the present work, by direct modulation of the laser wavelength at the frequency of the vibrating mode.

UR - https://www.scopus.com/pages/publications/0042231988

U2 - 10.1117/12.464267

DO - 10.1117/12.464267

M3 - Conference article

AN - SCOPUS:0042231988

SN - 0277-786X

VL - 4876

SP - 1054

EP - 1063

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

IS - 2

T2 - Opto-Ireland 2002: Optics and Photonics Technologies and Applications

Y2 - 5 September 2002 through 6 September 2002

ER -

Evaluation of high frequency vibrations using electronic speckle pattern interferometry

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