Scholars@Duke
Kathryn Hornburg

Kathryn Hornburg

Data Administration Analyst
Radiology

Scholarly Works - Conferences

Design and fabrication of an aspheric geometric-phase lens doublet

Conference Proceedings of SPIE the International Society for Optical Engineering · January 1, 2018 A prior simulation-only study of aspherical phase profiles [Hornburg et al, Proc SPIE 10743, 10743-4 (2018)] in geometric-phase lenses (GPLs) indicated that aspherical doublet lens systems should provide substantially improved off-axis performance than tho ... Full text Cite

Optimization of aspheric geometric-phase lenses for improved field-of-view

Conference Proceedings of SPIE the International Society for Optical Engineering · January 1, 2018 In optical thin-films and surfaces, geometric phase is utilized to control the phase beyond that possible through optical path differences. Geometric-phase lenses, which are significantly thinner than refractive lenses for the same numerical aperture (NA), ... Full text Cite

Experimental characterization of a F/1.5 geometric-phase lens with high-achromatic efficiency and low aberration

Conference Proceedings of SPIE the International Society for Optical Engineering · January 1, 2017 We report on the properties of a fast F/1.5 geometric-phase lens with a focal length of 37 mm at 633 nm and a 24.5 mm diameter. This lens employs photo-aligned liquid crystal layers to implement the spatially varying Pancharatnam-Berry phase, leading to th ... Full text Cite

Wide-color gamut multi-twist retarders

Conference Proceedings of SPIE the International Society for Optical Engineering · January 1, 2015 We show how highly chromatic Multi-Twist Retarder (MTR) films can be used to create a single-film color filter wherein the color may be selected only by the MTR orientation angle. By this approach, we can create multi- color images with just an MTR between ... Full text Cite

Multiband retardation control using multi-twist retarders

Conference Proceedings of SPIE the International Society for Optical Engineering · January 1, 2014 We introduce and demonstrate an approach to create highly chromatic retardation spectra across various wave-lengths. The design approach is based on Multi-Twist Retarder (MTR) principle where multiple liquid crystal polymer layers are coated on top of each ... Full text Cite