Mr. L. David Wellems Profile

L. David Wellems

Engineer at BlueHalo

SPIE Involvement:

Author

Publications (8)

Proceedings Article | 15 October 2012 Paper

Surface-plasmon mediated near-field light diffraction

Danhong Huang, L. David Wellems

Proceedings Volume 8495, 84950H (2012) https://doi.org/10.1117/12.927772

KEYWORDS: Dielectrics, Metals, Near field, Diffraction, Gaussian beams, Surface plasmons, Gold, Reflection, Electromagnetism, Radio propagation

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Proceedings Article | 21 January 2012 Paper

Analytic calculation for scattering of electromagnetic waves by linear slot array

Danhong Huang, David Wellems

Proceedings Volume 8268, 826804 (2012) https://doi.org/10.1117/12.913014

KEYWORDS: Dielectrics, Electromagnetic scattering, Scattering, Electromagnetic radiation, Analytical research, Finite-difference time-domain method, Electromagnetism, Metals, Diffraction, Refractive index

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Proceedings Article | 2 September 2010 Paper

Wavelength-tunable focal length of a nanopatterned metallic planar lens with strong focusing capability

L. David Wellems, Danhong Huang, T. Leskova, A. Maradudin

Proceedings Volume 7792, 77920S (2010) https://doi.org/10.1117/12.861497

KEYWORDS: Dielectrics, Gold, Refractive index, Sensors, Nanostructures, Metals, Wavelength tuning, Reverse modeling, Photodetectors, Interfaces

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Proceedings Article | 29 August 2008 Paper

Improved hyperspectral imagery using diffuse illumination or a polarizer

David Wellems, David Bowers

Proceedings Volume 7065, 706509 (2008) https://doi.org/10.1117/12.791778

KEYWORDS: Bidirectional reflectance transmission function, Polarizers, Diffraction gratings, Signal to noise ratio, Reflection, Polarimetry, Hyperspectral imaging, Reflectivity, Polarization, Diffuse reflectance spectroscopy

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SPIE Journal Paper | 1 April 2008

Unpolarized calibration and nonuniformity correction for long-wave infrared microgrid imaging polarimeters

David Bowers, James Boger, David Wellems, Stephen Ortega, Matthew Fetrow, John Hubbs, Wiley Black, Bradley Ratliff, J. Scott Tyo

OE, Vol. 47, Issue 04, 046403, (April 2008) https://doi.org/10.1117/12.10.1117/1.2911715

KEYWORDS: Calibration, Polarimetry, Polarization, Nonuniformity corrections, Long wavelength infrared, Staring arrays, Polarizers, Sensors, Optical spheres, Infrared radiation

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Proceedings Article | 13 September 2007 Paper

Information enhancement, metrics, and data fusion in spectral and polarimetric images of natural scenes

Michael Duggin, William Glass, Elizabeth Cabot, David Bowers, David Wellems, Paul Alsing

Proceedings Volume 6682, 66820A (2007) https://doi.org/10.1117/12.737430

KEYWORDS: Cameras, Polarimetry, Calibration, Data acquisition, Image fusion, Zoom lenses, Reflectivity, Polarization, Sensors, Data fusion

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Proceedings Article | 3 May 2006 Paper

Evaluation and display of polarimetric image data using long-wave cooled microgrid focal plane arrays

David Bowers, James Boger, L. David Wellems, Wiley Black, Steve Ortega, Bradley Ratliff, Matthew Fetrow, John Hubbs, J. Scott Tyo

Proceedings Volume 6240, 62400F (2006) https://doi.org/10.1117/12.666600

KEYWORDS: Staring arrays, Polarimetry, Nonuniformity corrections, Calibration, Polarization, Image fusion, Polarizers, Thermography, Sensors, Cameras

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Proceedings Article | 9 January 2002 Paper

Results of a new polarization simulation

Matthew Fetrow, David Wellems, Stephanie Sposato, Kenneth Bishop, Thomas Caudill, Michael Davis, Elizabeth Simrell

Proceedings Volume 4481, (2002) https://doi.org/10.1117/12.452902

KEYWORDS: Polarization, Glasses, Sensors, Refraction, Silicon, Surface roughness, Bidirectional reflectance transmission function, Temperature metrology, Atmospheric modeling, Scattering

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Showing 5 of 8 publications

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