Coding methods for low power laser generation of ultrasound

A. Cleary, I.A. Veres, G.J. Thursby, C. McKee, S.G. Pierce, B. Culshaw

Research output: Contribution to conferencePaper

3 Citations (Scopus)

Abstract

We describe how the application of maximum-length sequence (m-sequence) coding can be used to improve the measured signal-to-noise ratio of ultrasonic waves generated by a low power laser diode. Lamb waves were generated in thin metallic plates using a pulsed excitation. To improve the signal-to-noise ratio of the detected signal, various signal processing methods have been evaluated, with m-sequences described here. We also show how the spectral content of the ultrasonic wave can be controlled by using a modified m-sequence approach

Conference

Conference2010 Review of Progress in Quantitative Nondestructive Evaluation
CountryUnited States
CityKingston, Rhode Island
Period26/07/1031/07/10

Fingerprint

ultrasonic radiation
coding
signal to noise ratios
Lamb waves
lasers
signal processing
semiconductor lasers
excitation

Keywords

  • ultrasonic effects
  • semiconductor lasers
  • crystal microstructure
  • signal processing

Cite this

Cleary, A., Veres, I. A., Thursby, G. J., McKee, C., Pierce, S. G., & Culshaw, B. (2009). Coding methods for low power laser generation of ultrasound. 271-278. Paper presented at 2010 Review of Progress in Quantitative Nondestructive Evaluation, Kingston, Rhode Island, United States. https://doi.org/10.1063/1.3362404
Cleary, A. ; Veres, I.A. ; Thursby, G.J. ; McKee, C. ; Pierce, S.G. ; Culshaw, B. / Coding methods for low power laser generation of ultrasound. Paper presented at 2010 Review of Progress in Quantitative Nondestructive Evaluation, Kingston, Rhode Island, United States.8 p.
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Cleary, A, Veres, IA, Thursby, GJ, McKee, C, Pierce, SG & Culshaw, B 2009, 'Coding methods for low power laser generation of ultrasound' Paper presented at 2010 Review of Progress in Quantitative Nondestructive Evaluation, Kingston, Rhode Island, United States, 26/07/10 - 31/07/10, pp. 271-278. https://doi.org/10.1063/1.3362404

Coding methods for low power laser generation of ultrasound. / Cleary, A.; Veres, I.A.; Thursby, G.J.; McKee, C.; Pierce, S.G.; Culshaw, B.

2009. 271-278 Paper presented at 2010 Review of Progress in Quantitative Nondestructive Evaluation, Kingston, Rhode Island, United States.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Coding methods for low power laser generation of ultrasound

AU - Cleary, A.

AU - Veres, I.A.

AU - Thursby, G.J.

AU - McKee, C.

AU - Pierce, S.G.

AU - Culshaw, B.

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N2 - We describe how the application of maximum-length sequence (m-sequence) coding can be used to improve the measured signal-to-noise ratio of ultrasonic waves generated by a low power laser diode. Lamb waves were generated in thin metallic plates using a pulsed excitation. To improve the signal-to-noise ratio of the detected signal, various signal processing methods have been evaluated, with m-sequences described here. We also show how the spectral content of the ultrasonic wave can be controlled by using a modified m-sequence approach

AB - We describe how the application of maximum-length sequence (m-sequence) coding can be used to improve the measured signal-to-noise ratio of ultrasonic waves generated by a low power laser diode. Lamb waves were generated in thin metallic plates using a pulsed excitation. To improve the signal-to-noise ratio of the detected signal, various signal processing methods have been evaluated, with m-sequences described here. We also show how the spectral content of the ultrasonic wave can be controlled by using a modified m-sequence approach

KW - ultrasonic effects

KW - semiconductor lasers

KW - crystal microstructure

KW - signal processing

U2 - 10.1063/1.3362404

DO - 10.1063/1.3362404

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Cleary A, Veres IA, Thursby GJ, McKee C, Pierce SG, Culshaw B. Coding methods for low power laser generation of ultrasound. 2009. Paper presented at 2010 Review of Progress in Quantitative Nondestructive Evaluation, Kingston, Rhode Island, United States. https://doi.org/10.1063/1.3362404