Prof. M. J. Padgett

Kevin O'Holleran, Mark R. Dennis, and Miles J. Padgett
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Writing in Physical Review Letters, Kevin O'Holleran and Miles Padgett of the University of Glasgow and Mark Dennis of the University of Bristol, both in the UK, report their efforts to quantify and understand these kinds of rats-nest problems by examining the topology of the dark regions in a complex optical field.
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O'Holleran, Padgett, and Dennis numerically simulated optical speckle by superposing random plane waves to form a complex electromagnetic field marked by labyrinthine regions of complete destructive interference.
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[1] K. O'Holleran, M. R. Dennis, F. Flossmann, and M. J. Padgett, Phys.

J.Special Topics 145, 35-47 (2007)

download PDF; restricted linkR. Di Leonardo, G. Ruocco, J. Leach, M. J. Padgett, A. J. Wright, J. M. Girkin, D. R. Burnham, and D. McGloin, Parametric Resonance of Optically Trapped Aerosols, Phys.
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S. Franke-Arnold, J. Leach, M. J. Padgett, V. E. Lembessis, D. Ellinas, A. J. Wright, J. M. Girkin, P. Öhberg and A. S. Arnold, Optical ferris wheel for ultracold atoms, Opt.
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Graham Gibson, Louise Barron, Fiona Beck, Graeme Whyte and Miles Padgett, Optically controlled grippers for manipulating micron-sized particles, New J. Phys.
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S. Keen, J. Leach, G. Gibson and M. J. Padgett, Comparison of a high-speed camera and a quadrant detector for measuring displacements in optical tweezers, J. Opt.A: Pure Appl.Opt.9, S264ÐS266 (2007)

download PDF; restricted linkClaire S. Patterson, Lesley C. McMillan, Christopher Longbottom, Graham M. Gibson, Miles J. Padgett and Kenneth D. Skeldon, Portable optical spectroscopy for accurate analysis of ethane in exhaled breath, Meas.
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Claire S. Patterson, Lesley C. McMillan, Karen Stevenson, Kamaraj Radhakrishnan, Paul G. Shiels, Miles J. Padgett and Kenneth D. Skeldon, Dynamic study of oxidative stress in renal dialysis patients based on breath ethane measured by optical spectroscopy, J. Breath Res.
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Laura C. Thomson, Bill Hirst, Graham Gibson, Steve Gillespie, Philip Jonathan, Kenneth D. Skeldon, and Miles J. Padgett, An improved algorithm for locating a gas source using inverse methods, Atmospheric Environment 41, 1128-1134 (2007)
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R. Di Leonardo, J. Leach, H. Mushfique, J. M. Cooper, G. Ruocco, and M. J. Padgett, Multipoint Holographic Optical Velocimetry in Microfluidic Systems, Phys.
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Graham Gibson, Ben van Well, Jane Hodgkinson, Russ Pride, Rainer Strzoda, Stuart Murray, Steve Bishton and Miles Padgett, Imaging of methane gas using a scanning, open-path laser system, New J. Phys.
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Norbert Klauke, Paul Monaghan, Gavin Sinclair, Miles Padgett and Jon Cooper, Characterisation of spatial and temporal changes in pH gradients in microfluidic channels using optically trapped fluorescent sensors, Lab on a Chip 6, 788-793 (2006)
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J. Leach, G. M. Gibson, M. J. Padgett, E. Esposito, G. McConnell, A. J. Wright, and J. M. Girkin, Generation of achromatic Bessel beams using a compensated spatial light modulator, Opt.
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J. Leach, S. Keen, M. J. Padgett, C. Saunter, and G. D. Love, Direct measurement of the skew angle of the Poynting vector in a helically phased beam, Opt.
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Jonathan Leach, Hasan Mushfique, Roberto di Leonardo, Miles Padgett and Jon Cooper, An optically driven pump for microfluidics, Lab on a Chip 6, 735-739 (2006)
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K. O'Holleran, M. R. Dennis and M. J. Padgett, Illustrations of optical vortices in three dimensions, Journal of the European Optical Society - Rapid Publications 1, 06008 (2006)
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K. O'Holleran, M. J. Padgett, and M. R. Dennis, Topology of optical vortex lines formed by the interference of three, four, and five plane waves, Opt.
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Miles Padgett, Electromagnetism: Like a speeding watch, Nature 443, 924-925 (2006)
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Miles Padgett, Graeme Whyte, John Girkin, Amanda Wright, Les Allen, Patrik Öhberg and Stephen M. Barnett, Polarization and image rotation induced by a rotating dielectric rod: an optical angular momentum interpretation, Opt.
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Graeme Whyte, Graham Gibson, Jonathan Leach, Miles Padgett, Daniel Robert and Mervyn Miles, An optical trapped microhand for manipulating micron-sized objects, Opt.
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Amanda J. Wright, Brett A. Patterson, Simon P. Poland, John M. Girkin, Graham M. Gibson and Miles J. Padgett, Dynamic closed-loop system for focus tracking using a spatial light modulator and a deformable membrane mirror, Opt.
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Kurt D. Wulff, Daniel G. Cole, Robert L. Clark, Roberto DiLeonardo, Jonathan Leach, Jon Cooper, Graham Gibson and Miles J. Padgett, Aberration correction in holographic optical tweezers, Opt.
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Eric Yao, Sonja Franke-Arnold, Johannes Courtial, Stephen Barnett and Miles Padgett, Fourier relationship between angular position and optical orbital angular momentum, Opt.
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Eric Yao, Sonja Franke-Arnold, Johannes Courtial, Miles Padgett and Stephen Barnett, Observation of quantum entanglement using spatial light modulators, Opt.
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A. Aiuppa, S. Inguaggiato, A. J. S. McGonigle, M. O'Dwyer, C. Oppenheimer, M. J. Padgett, D. Rouwet and M. Valenza, H2S fluxes from Mt. Etna, Stromboli, and Vulcano (Italy) and implications for the sulfur budget at volcanoes, Geochimica et Cosmochimica Acta 69, 1861-1871 (2005)
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J. E. Hastie, L. G. Morton, S. Calvez, M. D. Dawson, T. Leinonen, M. Pessa, G. Gibson and M. J. Padgett, Red microchip VECSEL array, Opt.
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Pamela Jordan, Jon Cooper, Graeme McNay, Frances T. Docherty, Duncan Graham, W. Ewen Smith, Gavin Sinclair and Miles J. Padgett, Surface-enhanced resonance Raman scattering in optical tweezers using co-axial second harmonic generation, Opt.
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Pamela Jordan, Jonathan Leach, Miles Padgett, Paul Blackburn, Neil Isaacs, Mattias Goksör, Dag Hanstorp, Amanda Wright, John Girkin and Jonathan Cooper, Creating permanent 3D arrangements of isolated cells using holographic optical tweezers, Lab Chip 5, 1224-1228 (2005)
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J. Leach, M. R. Dennis, J. Courtial and M. J. Padgett, Vortex knots in light, New Journal of Physics 7, 55 (2005)
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David T. Pegg, Stephen M. Barnett, Roberta Zambrini, Sonja Franke-Arnold and Miles Padgett, Minimum uncertainty states of angular momentum and angular position, New Journal of Physics 7, 62 (2005)
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Ethan Schonbrun, Rafael Piestun, Pamela Jordan, Jon Cooper, Kurt D. Wulff, Johannes Courtial and Miles Padgett, 3D interferometric optical tweezers using a single spatial light modulator, Opt.
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K. D. Skeldon, G. M. Gibson, C. A. Wyse, L. C. McMillan, S. D. Monk, C. Longbottom and M. J. Padgett, Development of high-resolution real-time sub-ppb ethane spectroscopy and some pilot studies in life science, Appl.
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Kenneth D. Skeldon, Claire Patterson, Cathy A. Wyse, Graham M. Gibson, Miles J. Padgett, Chris Longbottom and Lesley C. McMillan, The potential offered by real-time, high-sensitivity monitoring of ethane in breath and some pilot studies using optical spectroscopy, J. Opt.
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Ole Steuernagel, Eric Yao, Kevin O'Holleran and Miles Padgett, Observation of Gouy-phase-induced transversal intensity changes in focused beams, J. Mod.
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Ben van Well, Stuart Murray, Jane Hodgkinson, Russ Pride, Rainer Strzoda, Graham Gibson and Miles Padgett, An open-path, hand-held laser system for the detection of methane gas, J. Opt.
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Sonja Franke-Arnold, Stephen M. Barnett, Eric Yao, Jonathan Leach, Johannes Courtial and Miles Padgett, Uncertainty principle for angular position and angular momentum, New J. Phys.
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Graham Gibson, Johannes Courtial, Miles J. Padgett, Mikhail Vasnetsov, Valeriy Pas'ko, Stephen M. Barnett and Sonja Franke-Arnold, Free-space information transfer using light beams carrying orbital angular momentum, Opt.
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Bill Hirst, Graham Gibson, Steve Gillespie, Ian Archibald, Olaf Podlaha, Kenneth D. Skeldon, Johannes Courtial, Steve Monk and Miles Padgett, Oil and gas prospecting by ultra-sensitive optical gas detection with inverse gas dispersion modelling, Geophys.
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P. Jordan, J. Cooper, G. McNay, F. T. Docherty, W. E. Smith, G. Sinclair and M. J. Padgett, Three-dimensional optical trapping of partially silvered silica microparticles, Opt.
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Jonathan Leach, Johannes Courtial, Kenneth Skeldon, Stephen M. Barnett, Sonja Franke-Arnold and Miles J. Padgett, Interferometric Methods to Measure Orbital and Spin, or the Total Angular Momentum of a Single Photon, Phys.
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Jonathan Leach, Mark Dennis, Johannes Courtial and Miles Padgett, Laser beams - Knotted threads of darkness, Nature 432, 165 (2004)
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Jonathan Leach, Gavin Sinclair, Pamela Jordan, Johannes Courtial, Miles J. Padgett, Jon Cooper and Zsolt J. Laczik, 3D manipulation of particles into crystal structures using holographic optical tweezers, Opt.
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Jonathan Leach, Eric Yao, and Miles J. Padgett, Observation of the vortex structure of a non-integer vortex beam, New Journal of Physics 6, 71 (2004)
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Graeme McNay, Frances T. Docherty, Duncan Graham, W. Ewen Smith, Pamela Jordan, Miles Padgett, Jonathan Leach, Gavin Sinclair, Paul B. Monaghan and Jonathan M. Cooper, Visual Observations of SERRS from Single Silver-Coated Silica Microparticles within Optical Tweezers, Angew.
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Valerie Nadeau, Martin O'Dwyer, Khaled Hamdan, Iain Tait and Miles Padgett, In vivo measurement of 5-aminolaevulinic acid-induced protoporphyrin IX photobleaching: a comparison of red and blue light of various intensities, Photodermatology Photoimmunology & Photomedicine 20, 170-174 (2004)
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Miles Padgett, Johannes Courtial, and Les Allen, Light's Orbital Angular Momentum, Physics Today, May 2004, 35-40
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Miles J. Padgett, The mechanism for energy tra

Miles Padgett, Johannes Courtial, and Les Allen have written an interesting review of the angular momentum properties of light (Physics Today, May 2004, page 35).
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Padgett and Allen reply: In our experiment, the particle was Teflon and had an absorption of a few percent, which meant it could be trapped within optical tweezers.
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2. L. Allen, M. J. Padgett, Opt.Commun.184, 67 (2000) [INSPEC].

Miles PadgettUniversity of Glasgow

Prof. Miles Padgett,Optics group » Miles Padgett

optics group banner
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Miles Padgett

Professor of Physics, Head of the Optics group, Fellow of the Royal Society of Edinburgh
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Miles PadgettProfessor Miles Padgett, FRSEDepartment of Physics and AstronomyKelvin Building
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Miles Padgett is Professor of Optics in the Department of Physics and Astronomy at the University of Glasgow.He heads a 15-man strong research team covering the full spectrum of blue-sky research to applied commercial development, funded by a combination of government, charity and industry.In 2001 he was elected to Fellowship of the Royal Society of Edinburgh.

Padgett has an international reputation for his contribution to the fundamental understanding of light's momentum, including conversion of optical tweezers into optical spanners, observation of a rotational form of the Doppler shift and a new form of Heisenberg's uncertainty principle.The applied aspects of his work have led to several commercial products and services, including; a UV pollution monitor and a new technique for oil prospecting.Padgett's group has published over 160 papers that have amassed over 2,500 citations in the world's leading scientific journals.He has made numerous TV, radio and popular press contributions and delivered many public lectures -- promoting science and technology to the widest possible audience.
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L. Allen, S. M. Barnett, and M. J. Padgett, Optical angular momentum (Institute of Physics Publishing, 2003; ISBN 0 7503 0901 6)
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Jonathan Leach, Mark Dennis, Johannes Courtial and Miles Padgett, Laser beams - Knotted threads of darkness, Nature 432, 165 (2004)
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Graham Gibson, Johannes Courtial, Miles J. Padgett, Mikhail Vasnetsov, Valeriy Pas'ko, Stephen M. Barnett and Sonja Franke-Arnold, Free-space information transfer using light beams carrying orbital angular momentum, Opt.
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A. T. O'Neil, I. MacVicar, L. Allen, and M. J. Padgett, Intrinsic and extrinsic nature of the orbital angular momentum of a light beam, Phys.
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N. B. Simpson, K. Dholakia, L. Allen, and M. J. Padgett, The mechanical equivalence of the spin and orbital angular momentum of light: an optical spanner, Opt.

J.Special Topics 145, 35-47 (2007) download PDF; restricted linkR. Di Leonardo, G. Ruocco, J. Leach, M. J. Padgett, A. J. Wright, J. M. Girkin, D. R. Burnham, and D. McGloin, Parametric Resonance of Optically Trapped Aerosols, Phys.
...
S. Franke-Arnold, J. Leach, M. J. Padgett, V. E. Lembessis, D. Ellinas, A. J. Wright, J. M. Girkin, P. Öhberg and A. S. Arnold, Optical ferris wheel for ultracold atoms, Opt.
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Graham Gibson, Louise Barron, Fiona Beck, Graeme Whyte and Miles Padgett, Optically controlled grippers for manipulating micron-sized particles, New J. Phys.
...
Claire S. Patterson, Lesley C. McMillan, Christopher Longbottom, Graham M. Gibson, Miles J. Padgett and Kenneth D. Skeldon, Portable optical spectroscopy for accurate analysis of ethane in exhaled breath, Meas.
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Laura C. Thomson, Bill Hirst, Graham Gibson, Steve Gillespie, Philip Jonathan, Kenneth D. Skeldon, and Miles J. Padgett, An improved algorithm for locating a gas source using inverse methods, Atmospheric Environment 41, 1128-1134 (2007)
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R. Di Leonardo, J. Leach, H. Mushfique, J. M. Cooper, G. Ruocco, and M. J. Padgett, Multipoint Holographic Optical Velocimetry in Microfluidic Systems, Phys.
...
Graham Gibson, Ben van Well, Jane Hodgkinson, Russ Pride, Rainer Strzoda, Stuart Murray, Steve Bishton and Miles Padgett, Imaging of methane gas using a scanning, open-path laser system, New J. Phys.
...
Norbert Klauke, Paul Monaghan, Gavin Sinclair, Miles Padgett and Jon Cooper, Characterisation of spatial and temporal changes in pH gradients in microfluidic channels using optically trapped fluorescent sensors, Lab on a Chip 6, 788-793 (2006)
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J. Leach, G. M. Gibson, M. J. Padgett, E. Esposito, G. McConnell, A. J. Wright, and J. M. Girkin, Generation of achromatic Bessel beams using a compensated spatial light modulator, Opt.
...
J. Leach, S. Keen, M. J. Padgett, C. Saunter, and G. D. Love, Direct measurement of the skew angle of the Poynting vector in a helically phased beam, Opt.
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Jonathan Leach, Hasan Mushfique, Roberto di Leonardo, Miles Padgett and Jon Cooper, An optically driven pump for microfluidics, Lab on a Chip 6, 735-739 (2006)
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K. O'Holleran, M. R. Dennis and M. J. Padgett, Illustrations of optical vortices in three dimensions, Journal of the European Optical Society - Rapid Publications 1, 06008 (2006)
...
K. O'Holleran, M. J. Padgett, and M. R. Dennis, Topology of optical vortex lines formed by the interference of three, four, and five plane waves, Opt.
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Miles Padgett, Electromagnetism: Like a speeding watch, Nature 443, 924-925 (2006)
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Miles Padgett, Graeme Whyte, John Girkin, Amanda Wright, Les Allen, Patrik Öhberg and Stephen M. Barnett, Polarization and image rotation induced by a rotating dielectric rod: an optical angular momentum interpretation, Opt.
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Graeme Whyte, Graham Gibson, Jonathan Leach, Miles Padgett, Daniel Robert and Mervyn Miles, An optical trapped microhand for manipulating micron-sized objects, Opt.
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Amanda J. Wright, Brett A. Patterson, Simon P. Poland, John M. Girkin, Graham M. Gibson and Miles J. Padgett, Dynamic closed-loop system for focus tracking using a spatial light modulator and a deformable membrane mirror, Opt.
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Kurt D. Wulff, Daniel G. Cole, Robert L. Clark, Roberto DiLeonardo, Jonathan Leach, Jon Cooper, Graham Gibson and Miles J. Padgett, Aberration correction in holographic optical tweezers, Opt.
...
Eric Yao, Sonja Franke-Arnold, Johannes Courtial, Stephen Barnett and Miles Padgett, Fourier relationship between angular position and optical orbital angular momentum, Opt.
...
Eric Yao, Sonja Franke-Arnold, Johannes Courtial, Miles Padgett and Stephen Barnett, Observation of quantum entanglement using spatial light modulators, Opt.
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A. Aiuppa, S. Inguaggiato, A. J. S. McGonigle, M. O'Dwyer, C. Oppenheimer, M. J. Padgett, D. Rouwet and M. Valenza, H2S fluxes from Mt. Etna, Stromboli, and Vulcano (Italy) and implications for the sulfur budget at volcanoes, Geochimica et Cosmochimica Acta 69, 1861-1871 (2005)
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J. E. Hastie, L. G. Morton, S. Calvez, M. D. Dawson, T. Leinonen, M. Pessa, G. Gibson and M. J. Padgett, Red microchip VECSEL array, Opt.
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Pamela Jordan, Jon Cooper, Graeme McNay, Frances T. Docherty, Duncan Graham, W. Ewen Smith, Gavin Sinclair and Miles J. Padgett, Surface-enhanced resonance Raman scattering in optical tweezers using co-axial second harmonic generation, Opt.
...
Pamela Jordan, Jonathan Leach, Miles Padgett, Paul Blackburn, Neil Isaacs, Mattias Goksör, Dag Hanstorp, Amanda Wright, John Girkin and Jonathan Cooper, Creating permanent 3D arrangements of isolated cells using holographic optical tweezers, Lab Chip 5, 1224-1228 (2005)
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J. Leach, M. R. Dennis, J. Courtial and M. J. Padgett, Vortex knots in light, New Journal of Physics 7, 55 (2005)
...
David T. Pegg, Stephen M. Barnett, Roberta Zambrini, Sonja Franke-Arnold and Miles Padgett, Minimum uncertainty states of angular momentum and angular position, New Journal of Physics 7, 62 (2005)
...
Ethan Schonbrun, Rafael Piestun, Pamela Jordan, Jon Cooper, Kurt D. Wulff, Johannes Courtial and Miles Padgett, 3D interferometric optical tweezers using a single spatial light modulator, Opt.
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K. D. Skeldon, G. M. Gibson, C. A. Wyse, L. C. McMillan, S. D. Monk, C. Longbottom and M. J. Padgett, Development of high-resolution real-time sub-ppb ethane spectroscopy and some pilot studies in life science, Appl.
...
Kenneth D. Skeldon, Claire Patterson, Cathy A. Wyse, Graham M. Gibson, Miles J. Padgett, Chris Longbottom and Lesley C. McMillan, The potential offered by real-time, high-sensitivity monitoring of ethane in breath and some pilot studies using optical spectroscopy, J. Opt.
...
Ole Steuernagel, Eric Yao, Kevin O'Holleran and Miles Padgett, Observation of Gouy-phase-induced transversal intensity changes in focused beams, J. Mod.
...
Ben van Well, Stuart Murray, Jane Hodgkinson, Russ Pride, Rainer Strzoda, Graham Gibson and Miles Padgett, An open-path, hand-held laser system for the detection of methane gas, J. Opt.
...
Sonja Franke-Arnold, Stephen M. Barnett, Eric Yao, Jonathan Leach, Johannes Courtial and Miles Padgett, Uncertainty principle for angular position and angular momentum, New J. Phys.
...
Graham Gibson, Johannes Courtial, Miles J. Padgett, Mikhail Vasnetsov, Valeriy Pas'ko, Stephen M. Barnett and Sonja Franke-Arnold, Free-space information transfer using light beams carrying orbital angular momentum, Opt.
...
Bill Hirst, Graham Gibson, Steve Gillespie, Ian Archibald, Olaf Podlaha, Kenneth D. Skeldon, Johannes Courtial, Steve Monk and Miles Padgett, Oil and gas prospecting by ultra-sensitive optical gas detection with inverse gas dispersion modelling, Geophys.
...
P. Jordan, J. Cooper, G. McNay, F. T. Docherty, W. E. Smith, G. Sinclair and M. J. Padgett, Three-dimensional optical trapping of partially silvered silica microparticles, Opt.
...
Jonathan Leach, Johannes Courtial, Kenneth Skeldon, Stephen M. Barnett, Sonja Franke-Arnold and Miles J. Padgett, Interferometric Methods to Measure Orbital and Spin, or the Total Angular Momentum of a Single Photon, Phys.
...
Jonathan Leach, Mark Dennis, Johannes Courtial and Miles Padgett, Laser beams - Knotted threads of darkness, Nature 432, 165 (2004)
...
Jonathan Leach, Gavin Sinclair, Pamela Jordan, Johannes Courtial, Miles J. Padgett, Jon Cooper and Zsolt J. Laczik, 3D manipulation of particles into crystal structures using holographic optical tweezers, Opt.
...
Jonathan Leach, Eric Yao, and Miles J. Padgett, Observation of the vortex structure of a non-integer vortex beam, New Journal of Physics 6, 71 (2004)
...
Graeme McNay, Frances T. Docherty, Duncan Graham, W. Ewen Smith, Pamela Jordan, Miles Padgett, Jonathan Leach, Gavin Sinclair, Paul B. Monaghan and Jonathan M. Cooper, Visual Observations of SERRS from Single Silver-Coated Silica Microparticles within Optical Tweezers, Angew.
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Valerie Nadeau, Martin O'Dwyer, Khaled Hamdan, Iain Tait and Miles Padgett, In vivo measurement of 5-aminolaevulinic acid-induced protoporphyrin IX photobleaching: a comparison of red and blue light of various intensities, Photodermatology Photoimmunology & Photomedicine 20, 170-174 (2004)
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Miles Padgett, Johannes Courtial, and Les Allen, Light's Orbital Angular Momentum, Physics Today, May 2004, 35-40
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Miles J. Padgett, The mechanism for energy transfer in the rotational frequency shift of a light beam, J. Opt.A: Pure Appl.Opt.6, S263-S265 (2004) download PDF; restricted linkGavin Sinclair, Pamela Jordan, Johannes Courtial, Miles Padgett, Jon Cooper and Zsolt John Laczik, Assembly of 3-dimensional structures using programmable holographic optical tweezers, Opt.
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G. Sinclair, P. Jordan, J. Leach, M. J. Padgett and J. Cooper, Defining the trapping limits of holographical optical tweezers, J. Mod.Opt.51, 409-414 (2004) download PDF; restricted linkGavin Sinclai