Dr. Thomas O. H. Charrett Profile

Dr. Thomas O. H. Charrett

Lecturer at Cranfield University

SPIE Involvement:

Author

Publications (15)

Proceedings Article | 15 August 2023 Presentation + Paper

A fibre optic angle sensing tape for applications in robotics and automation

Sivaji Pillai, Thomas O. Charrett, Thomas Kissinger, Stephen James, Ralph Tatam

Proceedings Volume 12618, 126180D (2023) https://doi.org/10.1117/12.2673185

KEYWORDS: Robots, Interferometers, Optical fibers, Robotics, Optical sensing, Fiber optics, Automation, Interferometry

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Proceedings Article | 15 August 2023 Presentation + Paper

Application and performance of laser speckle odometry applied to a mobile industrial robot

Thomas O. Charrett, Sam Gibson, Ralph Tatam

Proceedings Volume 12618, 126181G (2023) https://doi.org/10.1117/12.2673177

KEYWORDS: Speckle, Sensors, Industrial applications, Speckle pattern, Signal processing, Velocimetry, Image processing

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Proceedings Article | 21 June 2019 Paper

Multi degree-of-freedom position sensing by combination of laser speckle correlation and range-resolved interferometry

Thomas O. Charrett, Thomas Kissinger, Ralph Tatam

Proceedings Volume 11056, 110563K (2019) https://doi.org/10.1117/12.2525578

KEYWORDS: Sensors, Speckle, Interferometry, Robots, Signal processing, Laser interferometry, Speckle pattern

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Proceedings Article | 21 June 2019 Paper

Absolute angle measurement using dual-wavelength laser speckle for robotic manufacturing

Sam Gibson, Thomas Charrett, Ralph Tatam

Proceedings Volume 11056, 110560K (2019) https://doi.org/10.1117/12.2525335

KEYWORDS: Sensors, Speckle, Speckle pattern, Robotics, Manufacturing, Signal processing, Laser stabilization, Image processing, Laser sources

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Proceedings Article | 18 August 2018 Paper

Dual sensing-light-sheet OCT for microfluidic PTV

J. Hallam, E. Rigas, H. Ford, T. O. H. Charrett, R. Tatam

Proceedings Volume 10749, 107490M (2018) https://doi.org/10.1117/12.2319582

KEYWORDS: Particles, Microfluidics, Optical coherence tomography, Velocity measurements, Interfaces, Interferometers, Mirrors, Beam splitters, Spatial resolution, Velocimetry

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Proceedings Article | 26 June 2017 Paper

Laser speckle velocimetry for robot manufacturing

Thomas O. Charrett, Yashwanth Bandari, Florent Michel, Jialuo Ding, Stewart Williams, Ralph Tatam

Proceedings Volume 10329, 103291Z (2017) https://doi.org/10.1117/12.2269989

KEYWORDS: Laser manufacturing, Sensor performance, Speckle, Sensors, Manufacturing, Robotics, Control systems, Velocimetry, Additive manufacturing, 3D metrology, Robotic systems

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Proceedings Article | 16 May 2017 Paper

Speckle tracking approaches in speckle sensing

Thomas O. Charrett, Krzysztof Kotowski, Ralph Tatam

Proceedings Volume 10231, 102310L (2017) https://doi.org/10.1117/12.2264225

KEYWORDS: Speckle, Speckle pattern, Sensors, Robotics, Signal processing, Data processing, Computer vision technology, Detection and tracking algorithms, Image processing, Image segmentation, Binary data, Image processing algorithms and systems

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Proceedings Article | 28 September 2015 Paper

Range-resolved signal processing for fibre segment interferometry applied to dynamic long-gauge length strain sensing

Thomas Kissinger, Ricardo Correia, Thomas Charrett, Stephen James, Ralph Tatam

Proceedings Volume 9634, 96341Q (2015) https://doi.org/10.1117/12.2194347

KEYWORDS: Interferometry, Signal processing, Sensors, Reflectors, Modulation, Fiber Bragg gratings, Frequency modulation, Neodymium, Optical fibers, Acoustics

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Proceedings Article | 22 June 2015 Paper

Objective speckle displacement resulting from the deformation of shaped objects

Thomas O. Charrett, Ralph Tatam

Proceedings Volume 9525, 95251N (2015) https://doi.org/10.1117/12.2184060

KEYWORDS: Speckle, Sensors, Speckle pattern, Velocity measurements, Neodymium, Velocimetry, Cameras, Laser metrology, Optical testing, Robotics

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Proceedings Article | 22 June 2015 Paper

Simultaneous laser vibrometry on multiple surfaces with a single beam system using range-resolved interferometry

Thomas Kissinger, Thomas O. Charrett, Stephen James, Alvin Adams, Andrew Twin, Ralph Tatam

Proceedings Volume 9525, 952520 (2015) https://doi.org/10.1117/12.2183281

KEYWORDS: Interferometry, Vibrometry, Modulation, Sensors, Signal processing, Frequency modulation, Optical testing, Semiconductor lasers, Interferometers, Phase shift keying

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Proceedings Article | 7 November 2012 Paper

Range-resolved single-sideband optical fibre interferometry for quasi-distributed dynamic strain sensing

Thomas Kissinger, Thomas O. Charrett, Ralph Tatam

Proceedings Volume 8421, 84218I (2012) https://doi.org/10.1117/12.974933

KEYWORDS: Modulation, Interferometry, Sensors, Phase shift keying, Field programmable gate arrays, Fiber Bragg gratings, Ferroelectric materials, Optical signal processing, Signal processing, Computer programming

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Proceedings Article | 16 May 2008 Paper

3D planar velocity measurements using Mach-Zehnder interferometric-filter-based planar Doppler velocimetry (MZI-PDV) and imaging fibre bundles

Z. Lu, T. O. Charrett, H. Ford, R. Tatam

Proceedings Volume 7004, 70040I (2008) https://doi.org/10.1117/12.786544

KEYWORDS: Velocity measurements, Doppler effect, Light scattering, Interferometry, Optical filters, Imaging systems, Interferometers, Velocimetry, Particles, 3D metrology

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