Low power laser generated ultrasound: signal processing for time domain data acquisition

A. Cleary; Istvan Veres; G.J. Thursby; C. McKee; I. Armstrong; S.G. Pierce; B. Culshaw

Low power laser generated ultrasound: signal processing for time domain data acquisition

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

Electronic And Electrical Engineering

Research output: Contribution to conference › Paper

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Abstract

The use of low power modulated laser diode systems has previously been established as a suitable method for non-destructive laser generation of ultrasound. Using a quasi-continuous optical excitation amplified by an erbium-doped fibre amplifier (EDFA) allows flexible generation of ultrasonic waves, offering control of further parameters such as the frequency content or signal shape. In addition, pseudo-random binary sequences (PRBS) can be used to improve the detected impulse response. Here we compare two sequences, the m-sequence and the Golay code, and discuss the advantages and practical limits of their application with laser diode based optical excitation of ultrasound.

Original language	English
Publication status	Published - 2010
Event	Laser Ultrasonics 2010 - Bordeaux, France Duration: 5 Jul 2010 → 8 Jul 2010

Conference

Conference	Laser Ultrasonics 2010
City	Bordeaux, France
Period	5/07/10 → 8/07/10

Keywords

ultrasonics
lasers
ultrasound
low power
laser generated ultrasound
signal processing
time domain
data acquisition

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strathprints027793.pdf

PGII: Generation, Detection & Analysis of Optimally Coded Ultrasonic Waveforms
Gachagan, A., Hayward, G., Mulholland, A. & Pierce, G.
EPSRC (Engineering and Physical Sciences Research Council)
9/06/08 → 9/09/12
Project: Research

Cite this

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title = "Low power laser generated ultrasound: signal processing for time domain data acquisition",

abstract = "The use of low power modulated laser diode systems has previously been established as a suitable method for non-destructive laser generation of ultrasound. Using a quasi-continuous optical excitation amplified by an erbium-doped fibre amplifier (EDFA) allows flexible generation of ultrasonic waves, offering control of further parameters such as the frequency content or signal shape. In addition, pseudo-random binary sequences (PRBS) can be used to improve the detected impulse response. Here we compare two sequences, the m-sequence and the Golay code, and discuss the advantages and practical limits of their application with laser diode based optical excitation of ultrasound.",

keywords = "ultrasonics, lasers, ultrasound, low power, laser generated ultrasound, signal processing, time domain, data acquisition",

author = "A. Cleary and Istvan Veres and G.J. Thursby and C. McKee and I. Armstrong and S.G. Pierce and B. Culshaw",

year = "2010",

language = "English",

note = "Laser Ultrasonics 2010 ; Conference date: 05-07-2010 Through 08-07-2010",

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T1 - Low power laser generated ultrasound

T2 - Laser Ultrasonics 2010

AU - Cleary, A.

AU - Veres, Istvan

AU - Thursby, G.J.

AU - McKee, C.

AU - Armstrong, I.

AU - Pierce, S.G.

AU - Culshaw, B.

PY - 2010

Y1 - 2010

N2 - The use of low power modulated laser diode systems has previously been established as a suitable method for non-destructive laser generation of ultrasound. Using a quasi-continuous optical excitation amplified by an erbium-doped fibre amplifier (EDFA) allows flexible generation of ultrasonic waves, offering control of further parameters such as the frequency content or signal shape. In addition, pseudo-random binary sequences (PRBS) can be used to improve the detected impulse response. Here we compare two sequences, the m-sequence and the Golay code, and discuss the advantages and practical limits of their application with laser diode based optical excitation of ultrasound.

AB - The use of low power modulated laser diode systems has previously been established as a suitable method for non-destructive laser generation of ultrasound. Using a quasi-continuous optical excitation amplified by an erbium-doped fibre amplifier (EDFA) allows flexible generation of ultrasonic waves, offering control of further parameters such as the frequency content or signal shape. In addition, pseudo-random binary sequences (PRBS) can be used to improve the detected impulse response. Here we compare two sequences, the m-sequence and the Golay code, and discuss the advantages and practical limits of their application with laser diode based optical excitation of ultrasound.

KW - ultrasonics

KW - lasers

KW - ultrasound

KW - low power

KW - laser generated ultrasound

KW - signal processing

KW - time domain

KW - data acquisition

M3 - Paper

Y2 - 5 July 2010 through 8 July 2010

ER -

Low power laser generated ultrasound: signal processing for time domain data acquisition

Abstract

Conference

Keywords

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Projects

PGII: Generation, Detection & Analysis of Optimally Coded Ultrasonic Waveforms

Cite this