118 citations · 296 across the 9 of their papers we have counts for
8 papers · 1 filter
TIM, ray-tracing program for forbidden optics
Dean Lambert, Alasdair C. Hamilton, George Constable +3
TIM (The Interactive METATOY) is a ray-tracing program specifically tailored towards our research in METATOYs, which are optical components that appear to be able to create wave-op…
Experimental demonstration of a light-ray-direction-flipping METATOY based on confocal lenticular arrays
Michael Blair, Leo Clark, E. Alasdair Houston +4
We show, theoretically and experimentally, that a sheet formed by two confocal lenticular arrays can flip one component of the local light-ray direction. Ray-optically, such a shee…
Generalized refraction using lenslet arrays
Alasdair C. Hamilton, Johannes Courtial
We have recently started to investigate 2D arrays of confocal lens pairs. Miniaturization of the lens pairs can make the array behave ray-optically like a homogeneous medium. Here…
Superoscillation in speckle patterns
Mark R. Dennis, Alasdair C. Hamilton, Johannes Courtial
Waves are superoscillatory where their local phase gradient exceeds the maximum wavenumber in their Fourier spectrum. We consider the superoscillatory area fraction of random optic…
Metamaterials for light rays: ray optics without wave-optical analog in the ray-optics limit
Alasdair C. Hamilton, Johannes Courtial
Volumes of sub-wavelength electromagnetic elements can act like homogeneous materials: metamaterials. In analogy, sheets of optical elements such as prisms can act ray-optically li…
Fermat's principle with complex refractive indices and local light-ray rotation
Bhuvanesh Sundar, Alasdair C. Hamilton, Johannes Courtial
We describe local light-ray rotation in terms of complex refractive indices. We show that Fermat's principle holds, and we derive an extended Snell's law. The change in the angle o…