50 citations · 69 across the 4 of their papers we have counts for
4 papers
Beating bandwidth limits for large aperture broadband nano-optics
Johannes E. Fröch, Praneeth K. Chakravarthula, Jipeng Sun +10
Flat optics have been proposed as an attractive approach for the implementation of new imaging and sensing modalities to replace and augment refractive optics. However, chromatic a…
Metasurface Freeform Nanophotonics
Alan Zhan, Shane Colburn, Christopher M. Dodson +1
Freeform optics aims to expand the toolkit of optical elements by allowing for more complex phase geometries beyond rotational symmetry. Complex, asymmetric curvatures are employed…
Tunable metasurfaces via subwavelength phase shifters with uniform amplitude
Shane Colburn, Alan Zhan, Arka Majumdar
Metasurfaces with tunable spatial phase functions could benefit numerous applications. Currently, most approaches to tuning rely on mechanical stretching which cannot control phase…
Polarization degenerate micropillars fabricated by designing elliptical oxide apertures
Morten P. Bakker, Ajit V. Barve, Alan Zhan +3
A method for fabrication of polarization degenerate oxide apertured micropillar cavities is demon- strated. Micropillars are etched such that the size and shape of the oxide front…