Lt Col Samuel D. Butler
Education
PhD., Applied Physics, Sep 2015, AFIT
MS., Engineering Physics, Mar 2010, AFIT
BS., Applied Physics (Computer Science Emphasis), Apr 2004, Brigham Young University
Awards
Meritorious Service Medal-2016
Air Force Commendation Medal-2012
Joint Service Commendation Medal: First Oak Leaf Cluster-2011
Joint Service Commendation Medal-2008
Joint Service Achievement Medal-2006
Air Force Achievement Medal: First Oak Leaf Cluster-2005
Air Force Achievement Medal-2000
Publications
Refereed Journal Publications (includes conference papers based on full article peer review)
Sloan, J.A., Butler, S.D., Ullom, J.M., and Wander, J.D. “Experimental determination of glass bead retroreflectivity for aircraft geometries.” Airfield and Highway Pavements 2019: Innovation and Sustainability in Highway and Airfield Pavement Technology. Reston, VA: 436-446 (2019).
Ewing, B. E., S. D. Butler, and M. A. Marciniak. “Improved grazing angle bidirectional reflectance distribution function model using Rayleigh–Rice polarization factor and adaptive microfacet distribution function," Opt. Eng. 57, 1 (2018).
Butler, S. D., S. E. Nauyoks, and M. A. Marciniak. " Experimental analysis of bidirectional reflectance distribution function cross section conversion term in direction cosine space," Opt. Lett., 40: 2445- 2448 (2015).
Butler, S. D., S. E. Nauyoks, and M. A. Marciniak. " Comparison of microfacet BRDF model to modified Beckmann-Kirchhoff BRDF model for rough and smooth surfaces," Opt. Express 23: 29100-29112 (2015).
Conference Papers
Nagamine, E. K., K. W. Burgi, S. D. Butler, and M. A. Marciniak. “Nonmechanical beam-steering in reflective inverse diffusion”, Proc. SPIE, 1110706 (2019).
Ewing, B. E. and S. D. Butler. “Grazing angle experimental analysis of modification to microfacet BRDF model for improved accuracy”, Proc. SPIE, 106441I (2018).
Cruz, D., S. D. Butler, and B. J. Singleton. “Radiation induced defects in high-Z shielded Ytterbium doped fibers”, Proc. SPIE, 106290E (2018).
Butler, S. D., J. A. Ethridge, S. E. Nauyoks, and M. A. Marciniak. “Experimentally validated modification to Cook-Torrance BRDF model for improved accuracy”, Proc. SPIE, 1040214 (2017).
Lanari, A. M., S. D. Butler, M. A. Marciniak, and M. F. Spencer. “Wave optics simulation of statistically rough surface scatter”, Proc. SPIE, 1040215 (2017).
Freda, S. E., S. D. Butler, S. E. Nauyoks, and M. A. Marciniak. “Analysis of wave optics BRDF model elements for moderately rough surface,” Proc. SPIE, 99610G (2016).
Bintz, J. R., M. J. Mendenhall, M. A. Marciniak, S. D. Butler, and J. T. Lloyd. “A novel image-based BRDF measurement system and its application to human skin,” Proc. SPIE, 996108 (2016).
Butler, S. D., S. E. Nauyoks, and M. A. Marciniak. " Comparison of microfacet BRDF model elements to diffraction BRDF model elements," Proc. SPIE, 94720C (2015).
Butler, S. D., S. E. Nauyoks, and M. A. Marciniak. " Experimental measurement and analysis of wavelength-dependent properties of the BRDF," Proc. SPIE, 96110G (2015).
Butler, S. D. and M. A. Marciniak. " Robust categorization of microfacet BRDF models to enable flexible application-specific BRDF adaptation," Proc. SPIE, 920506 (2014).
Butler, S. D., M. A. Marciniak, and J. Meola. " Modeling effects of the bidirectional reflectance distribution function on remote sensing in the LWIR," Proc. SPIE, 92220H (2014).