Prof. Vincent Toal Profile

Prof. Vincent Toal

IEO Executive Director at Department of Education And Skills

SPIE Involvement:

Author

Publications (39)

Proceedings Article | 15 May 2017 Presentation + Paper

Presentation + Paper

Comparison of two methods for equalising the diffraction efficiency of different spatial frequency components of holographic optical elements

S. Keshri, K. Murphy, V. Toal, I. Naydenova, S. Martin

Proceedings Volume 10233, 102330X (2017) https://doi.org/10.1117/12.2265598

KEYWORDS: Refractive index, Volume holography, Modulation, Photopolymers, Collimation, Diffraction, Holographic optical elements, Spatial frequencies, Holography, Light emitting diodes, Diffraction gratings, Diffractive optical elements, Holograms, Spectroscopy, Ultrafast lasers

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Proceedings Article | 6 April 2017 Paper

Paper

Compact holographic optical element-based electronic speckle pattern interferometer for rotation and vibration measurements

Viswanath Bavigadda, Mohesh Moothanchery, Manojit Pramanik, Emilia Mihaylova, Vincent Toal

Proceedings Volume 10127, 101270X (2017) https://doi.org/10.1117/12.2251266

KEYWORDS: Holographic optical elements, Interferometers, Speckle pattern, Vibrometry, Speckle, Modulation, Semiconductor lasers, Metrology, Microscopy, Nondestructive evaluation, Phase shift keying, Fringe analysis, Phase shifts

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Proceedings Article | 6 April 2017 Paper

Paper

Effect of monomer diffusion on photoinduced shrinkage in photopolymer layers determined by electronic speckle pattern interferometry

Mohesh Moothanchery, Manojit Pramanik, Vincent Toal, Izabela Naydenova

Proceedings Volume 10127, 101270W (2017) https://doi.org/10.1117/12.2251260

KEYWORDS: Diffusion, Holography, Speckle pattern, Interferometry, Phase shifting, Holographic optical elements, Speckle, Phase measurement, Polymerization, Molecules, Phase shifts, Glasses, Ferroelectric materials, Mirrors, Beam splitters

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Proceedings Article | 9 March 2016 Paper

Paper

Quantitative measurement of displacement in photopolymer layers during holographic recording using phase shifting electronic speckle pattern interferometry

Mohesh Moothanchery, Viswanath Bavigadda, Paul Kumar Upputuri, Manojit Pramanik, Vincent Toal, Izabela Naydenova

Proceedings Volume 9718, 97181C (2016) https://doi.org/10.1117/12.2211577

KEYWORDS: Holography, Phase shifting, Interferometry, Polymers, Speckle pattern, Photopolymerization, Ferroelectric materials, Mirrors, Phase measurement

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Proceedings Article | 2 May 2012 Paper

Paper

Real-time shrinkage studies in photopolymer films using holographic interferometry

M. Moothanchery, I. Naydenova, V. Bavigadda, S. Martin, V. Toal

Proceedings Volume 8437, 84370I (2012) https://doi.org/10.1117/12.922413

KEYWORDS: Holographic interferometry, Holography, Holograms, Polymerization, Beam splitters, 3D image reconstruction, Glasses, CMOS cameras, Photopolymers, Holography applications

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Proceedings Article | 14 September 2010 Paper

Paper

Vibration phase measurements using holographic optical elements based electronic speckle pattern interferometry

Viswanath Bavigadda, Raghavendra Jallapuram, Vincent Toal, Emilia Mihaylova

Proceedings Volume 7387, 73870E (2010) https://doi.org/10.1117/12.870583

KEYWORDS: Holographic optical elements, Modulation, Interferometers, Semiconductor lasers, Speckle pattern, Reflection, Interferometry, Speckle, Phase shift keying, Phase shifts

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Proceedings Article | 17 June 2009 Paper

Paper

Out-of-plane vibration analysis with a transmission holographic-optical-element-based electronic speckle pattern interferometer

Viswanath Bavigadda, Vincent Toal, Raghavendra Jallapuram, Emilia Mihaylova

Proceedings Volume 7389, 73890H (2009) https://doi.org/10.1117/12.827674

KEYWORDS: Holographic optical elements, Semiconductor lasers, Speckle pattern, Interferometers, Diffraction, Speckle, Mirrors, Vibrometry, Glasses, Modulation

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Proceedings Article | 24 February 2009 Paper

Paper

Ocular microtremor laser speckle metrology

M. Al-Kalbani, E. Mihaylova, N. Collins, V. Toal, D. Coakley, G. Boyle

Proceedings Volume 7176, 717606 (2009) https://doi.org/10.1117/12.808855

KEYWORDS: Speckle, Eye, Sclera, Speckle metrology, Cameras, Speckle interferometry, Laser metrology, Photodiodes, Video, Biological research

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Proceedings Article | 27 September 2008 Paper

Paper

HOE-based ESPI systems

Emilia Mihaylova, Viswanath Bavigadda, Raghavendra Jallapuram, Vincent Toal

Proceedings Volume 7100, 71001O (2008) https://doi.org/10.1117/12.813845

KEYWORDS: Holographic optical elements, Speckle pattern, Reflection, Glasses, Reflectivity, Vibrometry, Speckle, Silver, Interferometry, Optical components

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Proceedings Article | 17 June 2008 Paper

Paper

Design and fabrication of holographic optical elements for applications in electronic speckle pattern interferometry and laser Doppler vibrometry

Viswanath Bavigadda, Raghavendra Jallapuram, Emilia Mihaylova, Vincent Toal

Proceedings Volume 7098, 70980O (2008) https://doi.org/10.1117/12.803006

KEYWORDS: Holographic optical elements, Speckle pattern, Interferometry, Reflection, Doppler effect, Silver, Optical design, Vibrometry, Interferometers, Laser applications

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Proceedings Article | 17 June 2008 Paper

Paper

Whole field out-of-plane vibration analysis with a HOE-based ESPI system

Emilia Mihaylova, Viswanath Bavigadda, Raghavendra Jallapuram, Vincent Toal

Proceedings Volume 7098, 70980M (2008) https://doi.org/10.1117/12.803004

KEYWORDS: Holographic optical elements, Glasses, Speckle pattern, Vibrometry, Reflectivity, Interferometry, Interferometers, Reflection, Fringe analysis, CCD cameras

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Proceedings Article | 11 April 2007 Paper

Paper

Hologram-based humidity indicator for domestic and packaging applications

I. Naydenova, R. Jallapuram, V. Toal, S. Martin

Proceedings Volume 6528, 652811 (2007) https://doi.org/10.1117/12.716242

KEYWORDS: Humidity, Holograms, Holography, Reflection, Holographic optical elements, Calibration, 3D image reconstruction, Packaging, Sensors, Holography applications

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Proceedings Article | 9 June 2006 Paper

Paper

Report on European COST action P8: materials and systems for optical data storage and processing

Hans Eichler, Vincent Toal

Proceedings Volume 6252, 625202 (2006) https://doi.org/10.1117/12.676492

KEYWORDS: Optical storage, Holography, Polymers, Data storage, Liquid crystals, Crystals, Near field optics, Complex systems, Laser crystals, Crystallography

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Proceedings Article | 9 June 2006 Paper

Paper

Holographic recording in nanoparticle-doped photopolymer

Izabela Naydenova, Hosam Sherif, Sveteana Mintova, Suzanne Martin, Vincent Toal

Proceedings Volume 6252, 625206 (2006) https://doi.org/10.1117/12.676503

KEYWORDS: Nanoparticles, Refractive index, Spatial frequencies, Holography, Diffraction, Solids, Modulation, Diffusion, Diffraction gratings, Polymers

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Proceedings Article | 9 June 2006 Paper

Paper

Two way diffusion model for the recording mechanism in a self developing dry acrylamide photopolymer

Suzanne Martin, Izabela Naydenova, Jallapuram Raghavendra, Robert Howard, Vincent Toal

Proceedings Volume 6252, 625205 (2006) https://doi.org/10.1117/12.676501

KEYWORDS: Diffusion, Diffraction, Diffraction gratings, Holography, Polymerization, Polymers, Spatial frequencies, Modulation, Refractive index, Holographic materials

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Proceedings Article | 9 June 2006 Paper

Paper

Replay at optical communications wavelengths of holographic gratings recorded in the visible

Vincent Toal, Maurice Whelan, Alberto Volcan, Izabela Naydenova, Suzanne Martin

Proceedings Volume 6252, 625204 (2006) https://doi.org/10.1117/12.676497

KEYWORDS: Diffraction gratings, Holography, Diffraction, Telecommunications, Visible radiation, Zirconium, Fiber Bragg gratings, Prisms, Reflection, Optical communications

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Proceedings Article | 9 June 2006 Paper

Paper

Comparison of three electronic speckle pattern shearing interferometers using photopolymer holographic optical elements

Emilia Mihaylova, Izabela Naydenova, Suzanne Martin, Vincent Toal

Proceedings Volume 6252, 62521Z (2006) https://doi.org/10.1117/12.677189

KEYWORDS: Diffraction gratings, Holography, Glasses, Speckle pattern, Control systems, Holographic optical elements, Shearing interferometers, CCD cameras, Interferometry, Holographic interferometry

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Proceedings Article | 15 October 2005 Paper

Paper

Simple electronic speckle pattern shearing interferometer with a holographic grating as a shearing element

Emilia Mihaylova, Izabela Naydenova, Suzanne Martin, Vincent Toal

Proceedings Volume 5962, 596226 (2005) https://doi.org/10.1117/12.625163

KEYWORDS: Diffraction gratings, Holography, Diffraction, Speckle pattern, Shearing interferometers, Holographic interferometry, Interferometry, Control systems, Fringe analysis, Optical components

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Proceedings Article | 13 June 2005 Paper

Paper

A compact electronic speckle pattern interferometry system using a photopolymer reflection holographic optical element

Sridhar Guntaka, J. Raghavendra, Vincent Toal, Izabela Naydenova, Suzanne Martin, S. Mintova

Proceedings Volume 5856, (2005) https://doi.org/10.1117/12.613252

KEYWORDS: Holographic optical elements, Speckle pattern, Holograms, Holography, CCD cameras, Modulation, Interferometry, Holographic interferometry, Speckle, Semiconductor lasers

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Proceedings Article | 8 June 2005 Paper

Paper

Study of an acrylamide-based photopolymer for use as a holographic data storage medium

H. Sherif, I. Naydenova, S. Martin, C. McGinn, G. Berger, C. Denz, V. Toal

Proceedings Volume 5827, (2005) https://doi.org/10.1117/12.604562

KEYWORDS: Diffraction gratings, Holography, Diffraction, Multiplexing, Data storage, Spatial light modulators, Polymerization, Beam splitters, Holograms, Molecules

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Proceedings Article | 8 June 2005 Paper

Paper

Holographic recording of patterns in thin film acrylamide-based photopolymer

I. Naydenova, K. Pavani, E. Mihaylova, K. Loudmer, S. Martin, V. Toal

Proceedings Volume 5827, (2005) https://doi.org/10.1117/12.605400

KEYWORDS: Spatial frequencies, Modulation, Holography, Diffusion, Molecules, Thin films, Optical design, Polymers, Systems modeling, Diffractive optical elements

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Proceedings Article | 3 June 2005 Paper

Paper

Investigation of polymerization rate in an acrylamide-based photopolymer using Raman spectroscopy

Raghavendra Jallapuram, Izabela Naydenova, Hugh Byrne, Suzanne Martin, Robert Howard, Vincent Toal

Proceedings Volume 5826, (2005) https://doi.org/10.1117/12.605416

KEYWORDS: Polymerization, Raman spectroscopy, Diffusion, Holography, Holograms, Molecules, Polymers, Spectroscopy, Solids, Holographic optical elements

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SPIE Journal Paper | 1 March 2005

Modernization of the Hilger & Watts gauge-block interferometer

Michael O'Hora, Brian Bowe, Vincent Toal, Sean Peyton

OE, Vol. 44, Issue 03, 035601, (March 2005) https://doi.org/10.1117/12.10.1117/1.1869996

KEYWORDS: Calibration, Interferometers, Software development, Lamps, Image enhancement, Image processing, Optical engineering, Interferometry, Transducers, Metrology

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Proceedings Article | 22 June 2004 Paper

Paper

Electronic speckle pattern shearing interferometry using photopolymer diffractive optical elements for vibration measurements

Emilia Mihaylova, Izabela Naydenova, Suzanne Martin, Vincent Toal

Proceedings Volume 5503, (2004) https://doi.org/10.1117/12.579539

KEYWORDS: Holography, Interferometry, Diffraction gratings, Speckle pattern, Vibrometry, Shearography, Modal analysis, Aluminum, Diffractive optical elements, CCD cameras

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Proceedings Article | 22 June 2004 Paper

Paper

Simple shearing interferometer suitable for vibration measurements

Emilia Mihaylova, Maurice Whelan, Vincent Toal

Proceedings Volume 5503, (2004) https://doi.org/10.1117/12.579541

KEYWORDS: Glasses, Phase shifts, Shearing interferometers, Vibrometry, Shearography, Modal analysis, Interferometry, Fringe analysis, Reflectivity, Control systems

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Proceedings Article | 18 February 2004 Paper

Paper

Application of photopolymer holographic gratings in electronic speckle pattern shearing interferometry

Emilia Mihaylova, Izabela Naydenova, Hosam Sherif, Suzanne Martin, Vincent Toal

Proceedings Volume 5249, (2004) https://doi.org/10.1117/12.512971

KEYWORDS: Holography, Diffraction gratings, Glasses, Interferometry, CCD cameras, Speckle pattern, Holographic interferometry, Holography applications, Spatial frequencies, Fringe analysis

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Proceedings Article | 4 November 2003 Paper

Paper

Detection of cracks and defects using electronic speckle pattern interferometry with a holographic optical element

Emilia Mihaylova, Vincent Toal, Sridhar Guntaka, Suzanne Martin

Proceedings Volume 5226, (2003) https://doi.org/10.1117/12.519489

KEYWORDS: Holographic optical elements, Speckle pattern, Holograms, Interferometry, Holographic interferometry, Holography, 3D image reconstruction, Photopolymers, Computing systems, Nondestructive evaluation

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Proceedings Article | 4 November 2003 Paper

Paper

Dynamic ESPI measurements for mechanical characterization of pipes

Emilia Mihaylova, Barry Duignan, Suzanne Martin, Vincent Toal, Martin Somers

Proceedings Volume 5226, (2003) https://doi.org/10.1117/12.519490

KEYWORDS: Finite element methods, Speckle pattern, Interferometry, Chemical elements, Nondestructive evaluation, Data modeling, Fringe analysis, Video, Cameras, Transducers

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Proceedings Article | 27 August 2003 Paper

Paper

Mechanical characterization of polyvinylchloride pipes using electronic speckle pattern interferometry

Emilia Mihaylova, Vincent Toal, Suzanne Martin, Brian Bowe

Proceedings Volume 4876, (2003) https://doi.org/10.1117/12.463908

KEYWORDS: Speckle pattern, Interferometry, Fringe analysis, Interferometers, Semiconductor lasers, Nondestructive evaluation, Material characterization, CCD cameras, Wavefronts, Video

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Proceedings Article | 27 August 2003 Paper

Paper

Applications in holographic and electronic speckle pattern interferometry of a photopolymer holographic recording material

Sridhar Guntaka, Vincent Toal, Suzanne Martin

Proceedings Volume 4876, (2003) https://doi.org/10.1117/12.463922

KEYWORDS: Holographic interferometry, Holograms, Speckle pattern, Interferometry, Holography, Speckle, 3D image reconstruction, Wavefronts, Holographic optical elements, Holographic materials

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Proceedings Article | 27 August 2003 Paper

Paper

Evaluation of high-frequency vibrations using electronic speckle pattern interferometry

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

Proceedings Volume 4876, (2003) https://doi.org/10.1117/12.464267

KEYWORDS: Modulation, Speckle pattern, Fringe analysis, Interferometry, Interferometers, Charge-coupled devices, Semiconductor lasers, Phase shift keying, CCD cameras, Phase shifting

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Proceedings Article | 27 May 2003 Paper

Paper

Investigation of three interferometric techniques for detection of surface flaws in elastomers

Emilia Mihaylova, Amir Tabakovic, Suzanne Martin, Vincent Toal

Proceedings Volume 4933, (2003) https://doi.org/10.1117/12.516669

KEYWORDS: Interferometry, Speckle pattern, Nondestructive evaluation, Optical interferometry, Visualization, Fringe analysis, Profiling, Interferometers, CCD cameras, Mirrors

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Proceedings Article | 27 May 2003 Paper

Paper

Holographic optical elements for combined holographic and digital speckle pattern interferometry

Sridhar Guntaka, Brian Bowe, Vincent Toal, Suzanne Martin

Proceedings Volume 4933, (2003) https://doi.org/10.1117/12.516644

KEYWORDS: Holographic interferometry, Holograms, Holographic optical elements, Holography, 3D image reconstruction, Speckle pattern, Digital holography, Interferometry, Reflection, Interferometers

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Proceedings Article | 13 August 1999 Paper

Paper

Illumination systems using photopolymer gratings for speckle interferometry

Maurice Whelan, Colin Forno, Suzanne Martin, Feidhlim O'Neill, Vincent Toal

Proceedings Volume 3744, (1999) https://doi.org/10.1117/12.357758

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SPIE Journal Paper | 1 June 1998

White light interferometric surface profiler

Brian Bowe, Vincent Toal

OE, Vol. 37, Issue 06, (June 1998) https://doi.org/10.1117/12.10.1117/1.601727

KEYWORDS: Mirrors, Interferometry, Profilometers, Modulation, Algorithm development, Data acquisition, Profiling, 3D image processing, Coherence (optics), 3D metrology

Proceedings Article | 26 March 1998 Paper

Paper

Applications of a self-developing photopolymer material: holographic interferometry and high-efficiency diffractive optical elements

Suzanne Martin, Clodagh Feely, John Sheridan, Vincent Toal

Proceedings Volume 3294, (1998) https://doi.org/10.1117/12.304530

KEYWORDS: Diffractive optical elements, Holography, Diffraction, Holographic interferometry, Spatial frequencies, Lenses, Holograms, Diffraction gratings, Photopolymers, Beam splitters

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Proceedings Article | 22 April 1996 Paper

Paper

Optimization of an acrylamide-based dry photopolymer holographic recording material

Clodagh Feely, Suzanne Martin, Vincent Toal, Antonio Fimia, Felipe Mateos

Proceedings Volume 2688, (1996) https://doi.org/10.1117/12.238544

KEYWORDS: Diffraction, Holography, Diffraction gratings, Holographic materials, Polymerization, Molecules, Camera shutters, Absorption, Luminescence, Oxygen

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SPIE Journal Paper | 1 December 1994

Linear displacement transducers based on speckle interferometry: error avoidance techniques

Brian Dooley, Vincent Toal

OE, Vol. 33, Issue 12, (December 1994) https://doi.org/10.1117/12.10.1117/12.184375

KEYWORDS: Transducers, Speckle, Signal detection, Computer programming, Beam splitters, Logic, Interferometers, Phase shifts, Speckle interferometry, Sensors

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SPIE Journal Paper | 1 December 1994

Characterization of an acrylamide-based dry photopolymer holographic recording material

Suzanne Martin, Philippe Leclere, Yvon Renotte, Vincent Toal, Yves Lion

OE, Vol. 33, Issue 12, (December 1994) https://doi.org/10.1117/12.10.1117/12.186423

KEYWORDS: Diffraction, Holography, Holographic materials, Modulation, Refractive index, Polymers, Diffraction gratings, Coating, Absorbance, Photorefractive polymers

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Showing 5 of 39 publications

Proceedings Volume Editor (1)

SPIE Conference Volume | 18 March 2003

Opto-Ireland 2002: Optics and Photonics Technologies and Applications

Conference Committee Involvement (1)

Optical Sciences

5 September 2002 | Galway, Ireland

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