K. Alexander Nugent

Articles in Scholarly Journals [Incomplete List]

  1. Curved beam coherent diffractive imaging
    Thin Solid Films, vol. 515, no. 14, pp. 5553–5556, 2007
  2. Coherent diffractive imaging and partial coherence
    Physical Review B, vol. 75, no. 10, 2007
  3. Experimental Measurement of the Four-Dimensional Coherence Function for an Undulator X-Ray Source
    Physical Review Letters, vol. 98, no. 22, 2007
  4. Fresnel Coherent Diffractive Imaging
    Physical Review Letters, vol. 97, no. 2, 2006
  5. Quality of the reconstruction in x-ray phase contrast tomography
    Review of Scientific Instruments, vol. 77, no. 6, p. 063709, 2006
  6. Diffractive imaging of highly focused X-ray fields
    Nature Physics, vol. 2, no. 2, Article ID nphys218, 3 pages, 2006
  7. Phase imaging with thermal neutrons?
    Physica B: Condensed Matter, vol. 385-386, pp. 1395–1401, 2006
  8. Optimising visibility for the neutron radiography of titanium and nickel gas turbine components
    Physica B: Condensed Matter, vol. 385-386, pp. 917–920, 2006
  9. Bending magnet source: A radiation source for X-ray phase contrast tomography
    Radiation Physics and Chemistry, vol. 75, no. 11, pp. 2004–2007, 2006
  10. New opportunities in X-ray tomography
    Radiation Physics and Chemistry, vol. 75, no. 11, pp. 2067–2071, 2006
  11. Single Cell Volume Measurement by Quantitative Phase Microscopy (QPM): A Case Study of Erythrocyte Morphology
    Cellular Physiology and Biochemistry, vol. 17, no. 5-6, pp. 193–200, 2006
  12. Phase-space reconstruction of focused x-ray fields
    Journal of the Optical Society of America A, vol. 23, no. 7, p. 1779, 2006
  13. Recovering the complete coherence function of a generalized Schell model field
    Optics Letters, vol. 31, no. 22, p. 3226, 2006
  14. Refractive index profiling of axially symmetric optical fibers: a new technique
    Optics Express, vol. 13, no. 9, p. 3277, 2005
  15. X-ray imaging: a generalized approach using phase-space tomography
    Journal of the Optical Society of America A, vol. 22, no. 8, p. 1691, 2005
  16. Synchrotron beam coherence: a spatially resolved measurement
    Optics Letters, vol. 30, no. 2, p. 204, 2005
  17. Iterative image reconstruction algorithms using wave-front intensity and phase variation
    Optics Letters, vol. 30, no. 13, p. 1638, 2005
  18. Phase retrieval from coherent soft X-ray optics
    Journal of Electron Spectroscopy and Related Phenomena, vol. 144-147, pp. 1171–1173, 2005
  19. Phase space density measurement of interfering X-rays
    Journal of Electron Spectroscopy and Related Phenomena, vol. 144-147, pp. 947–951, 2005
  20. X-ray phase contrast tomography with a bending magnet source
    Review of Scientific Instruments, vol. 76, no. 8, p. 083707, 2005
  21. Phase contrast radiography. II. Imaging of complex objects
    Review of Scientific Instruments, vol. 76, no. 11, p. 113704, 2005
  22. Astigmatic electron diffraction imaging: a novel mode for structure determination
    Acta Crystallographica Section A Foundations of Crystallography, vol. 61, no. 3, pp. 321–324, 2005
  23. Diffraction with wavefront curvature: a path to unique phase recovery
    Acta Crystallographica Section A Foundations of Crystallography, vol. 61, no. 3, pp. 373–381, 2005
  24. Quantitative phase-amplitude microscopy. III. The effects of noise
    Journal of Microscopy, vol. 214, no. 1, pp. 51–61, 2004
  25. Quantitative phase amplitude microscopy IV: imaging thick specimens
    Journal of Microscopy, vol. 214, no. 1, pp. 62–69, 2004
  26. Quantitative phase microscopy: A new tool for investigating the structure and function of unstained live cells
    Clinical and Experimental Pharmacology and Physiology, vol. 31, no. 12, pp. 896–901, 2004
  27. Phase measurement using x rays (invited)
    Review of Scientific Instruments, vol. 75, no. 10, p. 3382, 2004
  28. Phase contrast radiography: Image modeling and optimization
    Review of Scientific Instruments, vol. 75, no. 12, p. 5271, 2004
  29. High spatial resolution optical fibre mode profiling
    Electronics Letters, vol. 40, no. 13, p. 793, 2004
  30. Thermal and cold neutron phase-contrast radiography
    Applied Radiation and Isotopes, vol. 61, no. 4, pp. 547–550, 2004
  31. X-ray phase vortices: theory and experiment
    Journal of the Optical Society of America A, vol. 21, no. 8, p. 1575, 2004
  32. X-ray phase imaging: Demonstration of extended conditions for homogeneous objects
    Optics Express, vol. 12, no. 13, p. 2960, 2004
  33. Optical metrology for analysis of lobster-eye x-ray optics
    Applied Optics, vol. 42, no. 13, p. 2422, 2003
  34. Quantitative X-ray phase tomography with sub-micron resolution
    Optics Communications, vol. 217, no. 1-6, pp. 53–58, 2003
  35. The detection and sizing of flaws in components from the hot-end of gas turbines using phase-contrast radiography with neutrons: a feasibility study
    NDT & E International, vol. 36, no. 5, pp. 289–295, 2003
  36. Emulated super-resolution using quantitative phase microscopy
    Micron, vol. 34, no. 6-7, pp. 333–338, 2003
  37. X-ray tomographic imaging of the complex refractive index
    Applied Physics Letters, vol. 83, no. 7, p. 1480, 2003
  38. Complete characterization of a high-numerical-aperture small-core fiber with subwavelength resolution using atomic force microscopy and near-field scanning optical microscopy
    Optical Engineering, vol. 42, no. 7, p. 1893, 2003
  39. Quantitative phase-amplitude microscopy II: differential interference contrast imaging for biological TEM
    Journal of Microscopy, vol. 206, no. 3, pp. 204–208, 2002
  40. Quantitative phase-amplitude microscopy I: optical microscopy
    Journal of Microscopy, vol. 206, no. 3, pp. 194–203, 2002
  41. X-ray pulse compression using strained crystals
    Optics Communications, vol. 205, no. 4-6, pp. 351–359, 2002
  42. Production issues for high aspect ratio Lobster-eye optics using LIGA
    Microsystem Technologies, vol. 9, no. 1-2, pp. 55–60, 2002
  43. Precision measurement of the electromagnetic fields in the focal region of a high-numerical-aperture lens using a tapered fiber probe
    Journal of the Optical Society of America A, vol. 19, no. 8, p. 1689, 2002
  44. High-resolution phase imaging of phase singularities in the focal region of a lens
    Optics Letters, vol. 27, no. 5, p. 345, 2002
  45. Phase measurement of waves that obey nonlinear equations
    Optics Letters, vol. 27, no. 8, p. 622, 2002
  46. Observation of an x-ray vortex
    Optics Letters, vol. 27, no. 20, p. 1752, 2002
  47. Refractive-index profiling of optical fibers with axial symmetry by use of quantitative phase microscopy
    Optics Letters, vol. 27, no. 23, p. 2061, 2002
  48. Spatial coherence measurement of X-ray undulator radiation
    Optics Communications, vol. 195, no. 1-4, pp. 79–84, 2001
  49. LIGA for lobster: First observation of lobster-eye focusing from lithographically produced optics
    Review of Scientific Instruments, vol. 72, no. 3, p. 1843, 2001
  50. Contrast mechanisms for neutron radiography
    Applied Physics Letters, vol. 78, no. 7, p. 1011, 2001
  51. A Phase Odyssey
    Physics Today, vol. 54, no. 8, p. 27, 2001
  52. Matter-wave phase measurement: A noninterferometric approach
    Physical Review A, vol. 61, no. 6, 2000
  53. The holographic twin image problem: a deterministic phase solution
    Optics Communications, vol. 183, no. 1-4, pp. 7–14, 2000
  54. Nature, vol. 408, no. 6809, pp. 158–159, 2000
  55. Quantitative phase tomography
    Optics Communications, vol. 175, no. 4-6, pp. 329–336, 2000
  56. Quantitative phase-sensitive imaging in a transmission electron microscope
    Ultramicroscopy, vol. 83, no. 1-2, pp. 67–73, 2000
  57. Confocal laser scanning ophthalmoscope and spherical harmonics used as a possible aid to detect glaucoma
    Journal of the Optical Society of America A, vol. 17, no. 3, p. 477, 2000
  58. Noninterferometric quantitative phase imaging with soft x rays
    Journal of the Optical Society of America A, vol. 17, no. 10, p. 1732, 2000
  59. Evanescent field characterisation of tapered optical fibre sensors in liquid environments using near field scanning optical microscopy and atomic force microscopy
    IEE Proceedings - Optoelectronics, vol. 146, no. 5, p. 239, 1999
  60. Fabrication, modeling, and direct evanescent field measurement of tapered optical fiber sensors
    Journal of Applied Physics, vol. 85, no. 7, p. 3395, 1999
  61. Noninterferometric Phase Imaging with Partially Coherent Light
    Physical Review Letters, vol. 80, no. 12, pp. 2586–2589, 1998
  62. Sub-wavelength characterisation of optical focal structures
    Optics Communications, vol. 145, no. 1-6, pp. 9–14, 1998
  63. Rapid quantitative phase imaging using the transport of intensity equation
    Optics Communications, vol. 133, no. 1-6, pp. 339–346, 1997
  64. Field characterization of a D-shaped optical fiber using scanning near-field optical microscopy
    Journal of Applied Physics, vol. 82, no. 2, p. 510, 1997
  65. Atomic force microscopy for the determination of refractive index profiles of optical fibers and waveguides: A quantitative study
    Journal of Applied Physics, vol. 82, no. 6, p. 2730, 1997
  66. Quantitative Phase Imaging Using Hard X Rays
    Physical Review Letters, vol. 77, no. 14, pp. 2961–2964, 1996
  67. Protein Crystal Diffraction Patterns Using a Capillary-Focused Synchrotron X-ray Beam
    Journal of Synchrotron Radiation, vol. 3, no. 6, pp. 289–295, 1996
  68. One-dimensional focusing of synchrotron x-ray radiation with curved arrays of reflectors
    Review of Scientific Instruments, vol. 66, no. 2, p. 2197, 1995
  69. 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)
    Journal of Crystal Growth, vol. 157, no. 1-4, pp. 436–441, 1995
  70. Quasi-homogeneous fields: a van Cittert-Zernike theorem and the recovery of correlations from intensity
    Optics Communications, vol. 118, no. 1-2, pp. 9–13, 1995
  71. Characterization of optical fibers using near-field scanning optical microscopy
    Journal of Applied Physics, vol. 75, no. 6, p. 2753, 1994
  72. Confocal profilometer with nanometric vertical resolution
    Optics Communications, vol. 100, no. 1-4, pp. 87–92, 1993
  73. Wave field determination using three-dimensional intensity information
    Physical Review Letters, vol. 68, no. 15, pp. 2261–2264, 1992
  74. Measurement of the spatial coherence of a soft-x-ray laser
    Physical Review Letters, vol. 68, no. 5, pp. 588–591, 1992
  75. Optical fluctuations from moving partially coherent sources
    Physical Review Letters, vol. 66, no. 4, pp. 405–408, 1991
  76. A generalization of Schell's theorem
    Optics Communications, vol. 79, no. 5, pp. 267–269, 1990
  77. Twin-image elimination in Gabor holography
    Optics Communications, vol. 78, no. 3-4, pp. 293–299, 1990
  78. Three-dimensional optical microscopy: A sampling theorem
    Optics Communications, vol. 69, no. 1, pp. 15–19, 1988
  79. Maximum entropy analysis of coded images
    Optics Communications, vol. 62, no. 5, pp. 305–310, 1987
  80. Penumbral imaging of high energy X-rays from laser-produced plasmas
    Optics Communications, vol. 49, no. 6, pp. 393–396, 1984
  81. The use of a regular array of apertures in penumbral imaging
    Optics Communications, vol. 52, no. 4, pp. 287–291, 1984