Prof. Keith A. Nugent Profile

Prof. Keith A. Nugent

Deputy Vice Chancellor & VP of Research at La Trobe Univ

SPIE Involvement:

Author

Publications (35)

Proceedings Article | 2 January 2018 Paper

Partial coherence and the influence of overlap and curvature in ptychography

Guido Cadenazzi, Bo Chen, Timur Gureyev, H. Quiney, K. Nugent, B. Abbey

Proceedings Volume 10456, 104565X (2018) https://doi.org/10.1117/12.2283395

KEYWORDS: Coherence (optics), Diffraction, Reconstruction algorithms, Spatial coherence, Coherence imaging

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Proceedings Article | 9 December 2016 Paper

Optical ptychographic microscopy for quantitative anisotropic phase imaging

N. Anthony, G. Cadenazzi, K. Nugent, B. Abbey

Proceedings Volume 10013, 1001331 (2016) https://doi.org/10.1117/12.2242942

KEYWORDS: Microscopy, Optical microscopy, Phase imaging, Birefringence, Polarizers, Polarization, Reconstruction algorithms, Photoelasticity, Algorithm development, Protactinium

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Proceedings Article | 26 September 2013 Paper

A universal measure for coherence requirements in diffractive imaging

Bo Chen, Brian Abbey, Eugeniu Balaur, Grant van Reissen, Mark Junker, Michael W. Jones, Andrew Peele, Corey Putkunz, David Vine, Harry Quiney, Keith Nugent

Proceedings Volume 8851, 88510T (2013) https://doi.org/10.1117/12.2027269

KEYWORDS: Temporal coherence, Coherence (optics), Diffraction, Spatial coherence, Signal detection, Coherence imaging, Spatial resolution, X-rays, Binary data, X-ray diffraction

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Proceedings Article | 7 September 2006 Paper

Quantification of reconstruction quality in x-ray phase contrast tomography

Benedicta Arhatari, Keith Nugent, Andrew Peele

Proceedings Volume 6318, 63180R (2006) https://doi.org/10.1117/12.677432

KEYWORDS: Tomography, Spatial frequencies, X-rays, Phase contrast, Phase retrieval, Deconvolution, Contrast transfer function, Absorption, Wave propagation, Sensors

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Proceedings Article | 18 May 2006 Paper

Imaging by shape

Brendan Allman, Gavin Gregson, Keith Nugent

Proceedings Volume 6206, 620628 (2006) https://doi.org/10.1117/12.669100

KEYWORDS: Reflection, Wavefronts, Microscopes, Phase imaging, Scattering, Digital image correlation, Light wave propagation, Absorption, Reflectivity, Glasses

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Proceedings Article | 30 August 2005 Paper

Coherent diffractive imaging using focused beams

Keith Nugent, Andrew Peele, Harry Quiney

Proceedings Volume 5917, 59170A (2005) https://doi.org/10.1117/12.621992

KEYWORDS: Diffraction, Coherence imaging, X-rays, X-ray optics, X-ray diffraction, Crystals, Molecules, Wave propagation, Physics, Data acquisition

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Proceedings Article | 11 October 2004 Paper

Modeling of the Lobster-ISS x-ray telescope in orbit

Andrew Peele, Hakan Lyngsjo, Roland Crocker, John Markham, Nigel Bannister, Keith Nugent

Proceedings Volume 5488, (2004) https://doi.org/10.1117/12.550975

KEYWORDS: X-rays, Sensors, Microchannel plates, X-ray telescopes, Point spread functions, Space telescopes, Computer simulations, Device simulation, Ray tracing, Geometrical optics

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SPIE Journal Paper | 1 July 2003

Complete characterization of a high-numerical-aperture small-core fiber with subwavelength resolution using atomic force microscopy and near-field scanning optical microscopy

Shane Huntington, Ann Roberts, Keith Nugent, Simon Fleming

OE, Vol. 42, Issue 07, (July 2003) https://doi.org/10.1117/12.10.1117/1.1576221

KEYWORDS: Near field scanning optical microscopy, Etching, Structured optical fibers, Refractive index, Atomic force microscopy, Solids, Optical fibers, Spatial resolution, Scanning probe microscopy, Photonics

Proceedings Article | 21 November 2002 Paper

Fabrication of x-ray spiral masks by laser ablation

Andrew Peele, Keith Nugent, Phillip McMahon, David Paterson, Chanh Tran, Adrian Mancuso, Tracy Mackin, Jason Hayes, Erol Harvey, Ian McNulty

Proceedings Volume 4783, (2002) https://doi.org/10.1117/12.451024

KEYWORDS: Spiral phase plates, X-rays, Laser ablation, Excimer lasers, X-ray optics, Phase shift keying, Phase modulation, Microfabrication, Optical vortices, Photomasks

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Proceedings Article | 21 November 2002 Paper

Fabrication of uniformly redundant arrays and Young's slits for coherence measurements in x-rays

Nicolai Moldovan, David Paterson, Ralu Divan, Derrick Mancini, John Lin, Keith Nugent, Ian McNulty

Proceedings Volume 4783, (2002) https://doi.org/10.1117/12.451017

KEYWORDS: Gold, Phase shifts, Diffraction, Absorption, X-rays, Silicon, Optical lithography, Photoresist materials, Direct methods, Scanning electron microscopy

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Proceedings Article | 25 January 2002 Paper

LOBSTER-ISS: an imaging x-ray all-sky monitor for the International Space Station

George Fraser, Adam Brunton, Nigel Bannister, James Pearson, Martin Ward, Tim Stevenson, D. Watson, Bob Warwick, S. Whitehead, Paul O'Brian, Nicholas White, Keith Jahoda, Kevin Black, Stanley Hunter, Phil Deines-Jones, William Priedhorsky, Steven Brumby, Konstantin Borozdin, Thomas Vestrand, A. Fabian, Keith Nugent, Andrew Peele, Thomas Irving, Steve Price, Steve Eckersley, Ian Renouf, Mark Smith, Arvind Parmar, I. McHardy, P. Uttley, Andrew Lawrence

Proceedings Volume 4497, (2002) https://doi.org/10.1117/12.454217

KEYWORDS: X-rays, Microchannel plates, Sensors, X-ray optics, X-ray astronomy, X-ray imaging, Gamma radiation, Galactic astronomy, Stars, Space telescopes

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Proceedings Article | 21 November 2001 Paper

LIGA fabrication of high-aspect-ratio lobster-eye optics

Andrew Peele, Thomas Irving, Keith Nugent, Derrick Mancini, Nicolai Moldovan, Todd Christenson

Proceedings Volume 4592, (2001) https://doi.org/10.1117/12.448995

KEYWORDS: Microchannel plates, X-ray telescopes, Plating, Reflection, X-rays, Polymethylmethacrylate, X-ray optics, Surface roughness, Astronomical imaging, Reflectivity

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Proceedings Article | 5 January 2001 Paper

LIGA for lobster?

Andrew Peele, Thomas Irving, Keith Nugent, Derrick Mancini, Nicolai Moldovan, Todd Christenson, Robert Petre, Steven Brumby, William Priedhorsky

Proceedings Volume 4145, (2001) https://doi.org/10.1117/12.411641

KEYWORDS: Microchannel plates, X-rays, Image quality, Polymethylmethacrylate, Reflectivity, Metals, X-ray optics, Photomasks, Reflection, Telescopes

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Proceedings Article | 5 January 2001 Paper

Faster, better, cheaper metrology of lobster-eye (square-pore) optics

Thomas Irving, Andrew Peele, Keith Nugent, Steven Brumby

Proceedings Volume 4145, (2001) https://doi.org/10.1117/12.411639

KEYWORDS: X-rays, Metrology, Channel projecting optics, X-ray optics, Optics manufacturing, Data modeling, Charge-coupled devices, Optical metrology, Fabrication, Monte Carlo methods

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Proceedings Article | 23 November 1999 Paper

Novel condenser for EUV lithography ring-field projection optics

Henry Chapman, Keith Nugent

Proceedings Volume 3767, (1999) https://doi.org/10.1117/12.371121

KEYWORDS: Mirrors, Cameras, Photomasks, Extreme ultraviolet, Projection systems, Reflection, Solids, Collimation, Extreme ultraviolet lithography, Projection lithography

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Proceedings Article | 6 November 1998 Paper

Focusing neutrons with a lobster-eye optic

Brendan Allman, Alberto Cimmino, Shaun Griffin, Anthony Klein, Keith Nugent, Ian Anderson, Peter Hoghoj, Andrew Peele

Proceedings Volume 3449, (1998) https://doi.org/10.1117/12.330344

KEYWORDS: Capillaries, Glasses, X-rays, Channel projecting optics, Microchannel plates, Scattering, Photomicroscopy, Monte Carlo methods, Eye, Cladding

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Proceedings Article | 13 October 1998 Paper

Near-field probe interaction with an optical fiber taper

Peter Moar, Shane Huntington, Laurence Cahill, Jim Katsifolis, Ann Roberts, Keith Nugent, John Love

Proceedings Volume 3467, (1998) https://doi.org/10.1117/12.326809

KEYWORDS: Near field scanning optical microscopy, Near field, Refractive index, Optical fibers, Near field optics, Microscopes, Liquids, Wave propagation, Coating, Tapered optical fibers

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Proceedings Article | 31 August 1998 Paper

Square microchannel arrays for focusing neutrons and x rays

Alberto Cimmino, Brendan Allman, Steven Brumby, Thomas Irving, Anthony Klein, Keith Nugent, Ian Anderson, Peter Hoghoj, Andrew Peele

Proceedings Volume 3511, (1998) https://doi.org/10.1117/12.324327

KEYWORDS: X-rays, Microchannel plates, Glasses, Reflectivity, X-ray optics, Monte Carlo methods, Optical arrays, X-ray imaging, Reflection, Staring arrays

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Proceedings Article | 1 November 1997 Paper

Quantitative phase imaging using hard x rays

Keith Nugent, Timur Gureyev, D. Cookson, D. Paganin, Zwi Barnea

Proceedings Volume 3154, (1997) https://doi.org/10.1117/12.293366

KEYWORDS: X-rays, Absorption, X-ray imaging, Phase shifts, Phase imaging, Carbon, Synchrotrons, Image filtering, X-ray optics, Fourier transforms

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Proceedings Article | 10 January 1996 Paper

Fabrication of buried channel waveguides in fused silica by focused MeV ion-beam irradiation

Ann Roberts, M. von Bibra, Shane Huntington, Keith Nugent

Proceedings Volume 2695, (1996) https://doi.org/10.1117/12.229968

KEYWORDS: Waveguides, Silica, Refractive index, Near field, Ions, Raman spectroscopy, Ion beams, Fabrication, Hydrogen, Channel waveguides

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Proceedings Article | 6 September 1995 Paper

Investigation of optical fields using near-field optical techniques

A. Horsfall, Ann Roberts, Keith Nugent, Michael Hrynevych, Shane Huntington, S. Rhodes, M. von Bibra

Proceedings Volume 2535, (1995) https://doi.org/10.1117/12.218699

KEYWORDS: Near field, Prisms, Near field optics, Near field scanning optical microscopy, Electromagnetism, Reflection, Optical microscopy, Dielectrics, Magnetism, Microscopy

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Proceedings Article | 20 June 1995 Paper

Next generation x-ray all-sky monitor

William Priedhorsky, Andrew Peele, Keith Nugent

Proceedings Volume 2515, (1995) https://doi.org/10.1117/12.212590

KEYWORDS: X-rays, Sensors, X-ray telescopes, Telescopes, Space telescopes, Satellites, Active galactic nuclei, Spherical lenses, X-ray sources, Gamma radiation

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Proceedings Article | 20 June 1995 Paper

X-ray focusing using lobster eye optics: a comparison of theory with experiment

Andrew Peele, Keith Nugent, Andrei Rode, Kai Gaebel, Martin Richardson, Richard Strack, Walter Siegmund

Proceedings Volume 2515, (1995) https://doi.org/10.1117/12.212593

KEYWORDS: X-rays, Microchannel plates, X-ray optics, Surface roughness, Plasma, Absorbance, Eye, Aluminum, Capillaries, Telescopes

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Proceedings Article | 10 April 1995 Paper

Realization of Si1-x-yGexCy/Si heterostructures by pulsed-laser-induced epitaxy of C+ implanted pseudomorphic SiGe films and of a-SiGeC:H films deposited on Si(100)

Jacques Boulmer, A. Desmur-Larre, C. Guedj, D. Debarre, Philippe Boucaud, Francois Julien, Elieser Finkman, Keith Nugent, R. Laval, J.-B. Ozenne, H. Yang, D. Bouchier, Christian Godet, Pere Roca i Cabarrocas, G. Calvarin, C. Clerc

Proceedings Volume 2403, (1995) https://doi.org/10.1117/12.206273

KEYWORDS: Germanium, Silicon, Crystals, Pulsed laser operation, Epitaxy, Chemical species, Carbon, Raman spectroscopy, Laser damage threshold, Laser therapeutics

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Proceedings Article | 11 November 1994 Paper

Focusing of synchrotron x-ray radiation with cylindrically curved arrays of reflectors

Andrei Rode, Andrew Peele, Keith Nugent, Dan Johnson, D. Siddons

Proceedings Volume 2279, (1994) https://doi.org/10.1117/12.193148

KEYWORDS: X-rays, Reflectors, Synchrotrons, Reflectivity, Beam splitters, Manufacturing, Light sources, Optical components, Coating, Mirrors

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Proceedings Article | 11 November 1994 Paper

Square capillary x-ray optics

Andrew Peele, Brendan Allman, Alberto Cimmino, Andrei Nikulin, Keith Nugent, Stanley Mrowka, Stephen Lane, James Trebes, Richard Strack, Walter Siegmund, Stephen Wilkins

Proceedings Volume 2279, (1994) https://doi.org/10.1117/12.193142

KEYWORDS: Photons, Telescopes, X-rays, Capillaries, Mirrors, Reflectivity, X-ray telescopes, X-ray astronomy, Geometrical optics, Sensors

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Proceedings Article | 8 July 1994 Paper

Application of a constrained optimization algorithm to limited-view tomography

Jesse Kolman, Waleed Haddad, Dennis Goodman, Keith Nugent

Proceedings Volume 2299, (1994) https://doi.org/10.1117/12.179258

KEYWORDS: Point spread functions, Reconstruction algorithms, Optimization (mathematics), Image processing, Tomography, Deconvolution, Image segmentation, Convolution, Image analysis, Data modeling

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Proceedings Article | 1 February 1994 Paper

Square capillary x-ray optics

Andrew Peele, Brendan Allman, V. Cucevic, Alberto Cimmino, Keith Nugent, Stephen Wilkins, Henry Chapman

Proceedings Volume 2015, (1994) https://doi.org/10.1117/12.167988

KEYWORDS: X-rays, Capillaries, Reflectivity, Mirrors, Geometrical optics, Surface roughness, Microchannel plates, Photography, X-ray optics, Sensors

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Proceedings Article | 25 November 1993 Paper

Refractive index profile determinations using a Lloyd's mirage

Brendan Allman, Anthony Klein, Keith Nugent, Geoffrey Opat

Proceedings Volume 2000, (1993) https://doi.org/10.1117/12.163661

KEYWORDS: Refractive index, Waveguides, Mirrors, Diffusion, Interferometry, Spatial frequencies, Integrated optics, Light, Phase shifts, Fourier transforms

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Proceedings Article | 13 January 1993 Paper

Capillary x-ray optics

Henry Chapman, Keith Nugent, Stephen Wilkins, Andrei Rode

Proceedings Volume 1741, (1993) https://doi.org/10.1117/12.138758

KEYWORDS: Capillaries, X-rays, Mirrors, Microchannel plates, Reflectivity, Point spread functions, Reflection, Solids, X-ray microscopy, Geometrical optics

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Proceedings Article | 13 January 1993 Paper

Wavefront reconstruction from three-dimensional intensity measurements

Keith Nugent, Ann Roberts

Proceedings Volume 1741, (1993) https://doi.org/10.1117/12.138737

KEYWORDS: Fourier transforms, X-ray microscopy, Gaussian beams, Computer simulations, Interferometry, Wave propagation, Wavefront reconstruction, Holography, Spatial resolution, Point spread functions

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Proceedings Article | 26 June 1992 Paper

Characterization of imaging from a three-dimensional optical microscope

David Abbott, Keith Nugent

Proceedings Volume 1660, (1992) https://doi.org/10.1117/12.59553

KEYWORDS: 3D image processing, Point spread functions, Image processing, Microscopy, Spatial frequencies, Biomedical optics, Microscopes, Deconvolution, Optical microscopes, Modulation transfer functions

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Proceedings Article | 5 February 1992 Paper

Spatial coherence diagnostic for x-ray lasers

James Trebes, Keith Nugent, Stanley Mrowka, Richard London, Troy Barbee, Michael Carter, Brian MacGowan, Dennis Matthews, Luiz Da Silva, Gary Stone, Michael Feit

Proceedings Volume 1551, (1992) https://doi.org/10.1117/12.134814

KEYWORDS: X-ray lasers, Spatial coherence, Diffraction, Selenium, X-rays, Diagnostics, Visible radiation, Plasma, Fourier transforms, Microscopy

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Proceedings Article | 1 February 1992 Paper

Imaging of near-field diffraction patterns with subwavelength resolution in the optical region

Duncan Butler, Keith Nugent, Ann Roberts, Patrick Kearney

Proceedings Volume 1556, (1992) https://doi.org/10.1117/12.134884

KEYWORDS: Near field scanning optical microscopy, Near field, Diffraction, Microscopy, Near field optics, Optical fibers, Image resolution, Sensors, Cladding, Near field diffraction

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