Dr. Jean-Pierre Monchalin Profile

Dr. Jean-Pierre Monchalin

Consultant at JPM Consulting

SPIE Involvement:

Author

Publications (22)

SPIE Journal Paper | 7 May 2012 Open Access

Non-contact biomedical photoacoustic and ultrasound imaging

Guy Rousseau, Bruno Gauthier, Alain Blouin, Jean-Pierre Monchalin

JBO, Vol. 17, Issue 6, 061217, (May 2012) https://doi.org/10.1117/12.10.1117/1.JBO.17.6.061217

KEYWORDS: Tissue optics, Ultrasonography, Natural surfaces, Biomedical optics, Tissues, Ultrasonics, Photoacoustic spectroscopy, Brain, Laser safety, Absorption

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Proceedings Article | 23 February 2012 Paper

Non-contact photoacoustic tomography and ultrasonography for biomedical imaging

Guy Rousseau, Daniel Lévesque, Alain Blouin, Jean-Pierre Monchalin

Proceedings Volume 8223, 82231C (2012) https://doi.org/10.1117/12.906874

KEYWORDS: Tissues, Ultrasonography, Ultrasonics, Tissue optics, Natural surfaces, Biomedical optics, Laser safety, Breast, Acquisition tracking and pointing, Blood vessels

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Proceedings Article | 9 February 2012 Paper

Non-contact photoacoustic tomography and ultrasonography for brain imaging

Guy Rousseau, Alain Blouin, Jean-Pierre Monchalin

Proceedings Volume 8207, 820750 (2012) https://doi.org/10.1117/12.906871

KEYWORDS: Tissues, Ultrasonography, Tissue optics, Laser safety, Natural surfaces, Ultrasonics, Brain, Biomedical optics, Acquisition tracking and pointing, Blood vessels

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SPIE Journal Paper | 1 July 2010 Open Access

Intravascular optical coherence tomography on a beating heart model

Guy Lamouche, Marc Dufour, Mark Hewko, Sébastien Vergnole, Bruno Gauthier, Charles-Etienne Bisaillon, Jean-Pierre Monchalin, Michael Sowa

JBO, Vol. 15, Issue 04, 046023, (July 2010) https://doi.org/10.1117/12.10.1117/1.3475960

KEYWORDS: Heart, Optical coherence tomography, Arteries, Blood, In vivo imaging, Imaging systems, Animal model studies, Polymers, Video, GRIN lenses

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Proceedings Article | 24 February 2010 Paper

Spatial resolution of ultrasound-modulated optical tomography used for the detection of absorbing and scattering objects in thick scattering media

Guy Rousseau, Alain Blouin, Jean-Pierre Monchalin

Proceedings Volume 7564, 75642A (2010) https://doi.org/10.1117/12.841828

KEYWORDS: Ultrasonics, Ultrasound-modulated optical tomography, Scattering, Laser scattering, Modulation transfer functions, Photons, Spatial resolution, Solids, Point spread functions, Scattering media

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Proceedings Article | 12 February 2009 Paper

Ultrasound-modulated optical imaging using a photorefractive interferometer and a powerful long pulse laser

Guy Rousseau, Alain Blouin, Jean-Pierre Monchalin

Proceedings Volume 7177, 71771D (2009) https://doi.org/10.1117/12.807954

KEYWORDS: Scattering, Laser scattering, Interferometers, Photons, Acoustics, Ultrasonics, Transducers, Pulsed laser operation, Breast, Biomedical optics

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Proceedings Article | 12 February 2009 Paper

Ultrasound-modulated optical imaging using a confocal Fabry-Perot interferometer and a powerful long pulse laser

Guy Rousseau, Alain Blouin, Jean-Pierre Monchalin

Proceedings Volume 7177, 71771E (2009) https://doi.org/10.1117/12.807960

KEYWORDS: Photons, Scattering, Laser scattering, Acoustics, Ultrasonics, Signal to noise ratio, Ultrasonography, Biomedical optics, Optical imaging, Transducers

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Proceedings Article | 11 August 2008 Paper

Acousto-optical imaging using a powerful long pulse laser

Guy Rousseau, Alain Blouin, Jean-Pierre Monchalin

Proceedings Volume 7099, 709902 (2008) https://doi.org/10.1117/12.804506

KEYWORDS: Ultrasonics, Photons, Interferometers, Crystals, Pulsed laser operation, Transducers, Acoustics, Optical amplifiers, Scattering, Ultrasonography

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Acousto-optical imaging is an emerging biodiagnostic technique which provides an optical spectroscopic signature and a spatial localization of an optically absorbing target embedded in a strongly scattering medium. The transverse resolution of the technique is determined by the lateral extent of ultrasound beam focal zone while the axial resolution is obtained by using short ultrasound pulses. Although very promising for medical diagnostic, the practical application of this technique is presently limited by its poor sensitivity. Moreover, any method to enhance the signal-to-noise ratio must obviously satisfy the in vivo safety limits regarding the acceptable power level of both the ultrasonic pressure wave and the laser beam. In this paper, we propose to improve the sensitivity by using a pulsed single-frequency laser source to raise the optical peak power applied to the scattering medium and to collect more ultrasonically tagged photons. Such a laser source also allows illuminating the tissues mainly during the transit time of the ultrasonic wave to maintain the average optical power below the maximum permissible exposure. In our experiment, a single-frequency Nd:YAG laser emitting 500-μs pulses with a peak power superior to 100 W was used. Photons were tagged in few-cm thick optical phantoms with tone bursts generated by an ultrasonic transducer. Tagged photons were detected with a GaAs photorefractive interferometer characterized by a large optical etendue to process simultaneously a large number of speckle grains. When pumped by high intensity laser pulses, such an interferometer also provides the fast response time essential to obtain an apparatus insensitive to the speckle decorrelation due to mechanical vibrations or tissues movements. The use of a powerful long pulse laser appears promising to enhance the signal level in ultrasound modulated optical imaging. When combined with a photorefractive interferometer of large optical etendue, such a source could allow obtaining both the sensitivity and the fast response time necessary for biodiagnostic applications.

Proceedings Article | 28 February 2008 Paper

Improvement of sensitivity of acousto-optical imaging using a powerful long pulse laser

Guy Rousseau, Alain Blouin, Jean-Pierre Monchalin

Proceedings Volume 6856, 68561O (2008) https://doi.org/10.1117/12.761667

KEYWORDS: Ultrasonics, Photons, Interferometers, Pulsed laser operation, Acoustics, Crystals, Transducers, Optical amplifiers, Laser crystals, Beam splitters

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Proceedings Article | 21 February 2008 Paper

Deformable and durable optical phantoms with controlled density of scatterers

Charles-Étienne Bisaillon, Guy Lamouche, Marie-Michèle Lanthier, Daniel Lévesque, Romain Maciejko, Jean-Pierre Monchalin

Proceedings Volume 6870, 68700A (2008) https://doi.org/10.1117/12.761750

KEYWORDS: Silicon, Optical coherence tomography, Speckle, Silica, Tissues, Scanning electron microscopy, Tissue optics, Particles, Matrices, Optical phantoms

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Proceedings Article | 18 February 2008 Paper

On the speckle size in optical coherence tomography

G. Lamouche, C.-E. Bisaillon, S. Vergnole, J. P. Monchalin

Proceedings Volume 6847, 684724 (2008) https://doi.org/10.1117/12.761862

KEYWORDS: Speckle, Optical coherence tomography, Point spread functions, Optical phantoms, Scanning electron microscopy, Tissues, Tissue optics, Optical testing, Speckle pattern, Estimation theory

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Proceedings Article | 26 October 2007 Paper

Speckle size in optical Fourier domain imaging

G. Lamouche, S. Vergnole, C-E. Bisaillon, M. Dufour, R. Maciejko, J-P. Monchalin

Proceedings Volume 6796, 67960I (2007) https://doi.org/10.1117/12.778506

KEYWORDS: Speckle, Optical coherence tomography, Optical imaging, Data processing, Tissue optics, Optical phantoms, Silica, Fourier transforms, Tissues, Silicon

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Proceedings Article | 11 July 2007 Paper

Speckle size in optical coherence tomography

G. Lamouche, C.-E. Bisaillon, R. Maciejko, M. Dufour, J.-P. Monchalin

Proceedings Volume 6627, 66270R (2007) https://doi.org/10.1117/12.728573

KEYWORDS: Speckle, Optical coherence tomography, Silicon, Solids, Tissue optics, Tissues, Optical phantoms, Silica, Coherence imaging, Fourier transforms

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Proceedings Article | 7 February 2007 Paper

Optical delay line using rotating rhombic prisms

G. Lamouche, M. Dufour, B. Gauthier, V. Bartulovic, M. Hewko, J.-P. Monchalin

Proceedings Volume 6429, 64292G (2007) https://doi.org/10.1117/12.701047

KEYWORDS: Prisms, Mirrors, Geometrical optics, Optical coherence tomography, Tissue optics, Optical components, Imaging systems, Biomedical optics, Real time imaging, Optical alignment

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Proceedings Article | 15 September 2006 Paper

Optical coherence tomography for industrial and biomedical applications

Guy Lamouche, Charles-Etienne Bisaillon, Marc Dufour, Bruno Gauthier, Romain Maciejko, Jean-Pierre Monchalin

Proceedings Volume 6341, 63410T (2006) https://doi.org/10.1117/12.695302

KEYWORDS: Optical coherence tomography, Speckle, Prisms, Tissues, Biomedical optics, Speckle pattern, Mirrors, Tissue optics, Laser induced breakdown spectroscopy, Interferometry

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Proceedings Article | 19 May 2005 Paper

Determination of residual stresses using laser-generated surface skimming longitudinal waves

Christophe Bescond, Jean-Pierre Monchalin, Daniel Levesque, Adam Gilbert, Richard Talbot, Makoto Ochiai

Proceedings Volume 5767, (2005) https://doi.org/10.1117/12.620374

KEYWORDS: Ultrasonics, Wave propagation, Surface roughness, Aluminum, Velocity measurements, Signal to noise ratio, Ultrasonography, Transducers, Pulsed laser operation, Inspection

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Proceedings Article | 24 July 2001 Paper

Laser-ultrasonic detection of hidden corrosion in aircraft structure

Daniel Levesque, M. Massabki, Marc Choquet, Christian Neron, N. Bellinger, David Forsyth, C. Chapman, Ronald Gould, Jerzy Komorowski, Jean-Pierre Monchalin

Proceedings Volume 4335, (2001) https://doi.org/10.1117/12.434184

KEYWORDS: Corrosion, Skin, Metals, Inspection, X-rays, Ultrasonics, Ultrasonography, Aluminum, Aircraft structures, X-ray imaging

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Proceedings Article | 15 December 2000 Paper

Laser ultrasonics: a new tool for the industry

Alain Blouin, Marc Choquet, Daniel Levesque, Andre Moreau, Jean-Pierre Monchalin

Proceedings Volume 4087, (2000) https://doi.org/10.1117/12.406355

KEYWORDS: Fabry–Perot interferometers, Ultrasonics, Confocal microscopy, Interferometers, Reflection, Crystals, Inspection, Mirrors, Two wave mixing, Composites

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Proceedings Article | 15 June 2000 Paper

Short response time fiber-coupled photorefractive ultrasonic demodulator

Benjamin Campagne, Alain Blouin, Jean-Pierre Monchalin

Proceedings Volume 4087, (2000) https://doi.org/10.1117/12.406356

KEYWORDS: Crystals, Receivers, Sensors, Fabry–Perot interferometers, Laser crystals, Ultrasonics, Modulation, Signal detection, Interference (communication), Gallium arsenide

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Proceedings Article | 22 September 1997 Paper

Photorefractive detection of ultrasound

Philippe Delaye, Alain Blouin, Louis-Anne de Montmorillon, Denis Drolet, Jean-Pierre Monchalin, Gerald Roosen

Proceedings Volume 3137, (1997) https://doi.org/10.1117/12.287778

KEYWORDS: Crystals, Signal detection, Ultrasonics, Phase conjugation, Sensors, Heterodyning, Beam splitters, Laser crystals, Wavefronts, Ultrasonography

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Proceedings Article | 18 September 1996 Paper

Detection of ultrasonic vibrations on rough surfaces through the photorefractive effect

Philippe Delaye, Alain Blouin, Louis-Anne de Montmorillon, Ivan Biaggio, Denis Drolet, Jean-Pierre Monchalin, Gerald Roosen

Proceedings Volume 2782, (1996) https://doi.org/10.1117/12.250776

KEYWORDS: Signal detection, Photorefraction, Ultrasonics, Wavefronts, Phase conjugation, Heterodyning, Oscillators, Homodyne detection, Mirrors, Ultrasonography

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SPIE Journal Paper | 1 September 1993

Absolute optical absorption spectra in graphite epoxy by Fourier transform infrared photoacoustic spectroscopy

Marc Dubois, Marc Choquet, Jean-Pierre Monchalin, Franck Enguehard, Lionel Bertrand

OE, Vol. 32, Issue 09, (September 1993) https://doi.org/10.1117/12.10.1117/12.145067

KEYWORDS: Photoacoustic spectroscopy, Epoxies, Absorption, Composites, Modulation, Ultrasonography, Mirrors, FT-IR spectroscopy, Calibration, Thermography

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Showing 5 of 22 publications

Conference Committee Involvement (1)

Photonics North 2006

19 June 2006 | Quebec City, Canada

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