5 research outputs found
Reconciling and Validating the Ashworth-Davies Doppler Shifts of a Translating Mirror
We simplify the Ashworth-Davies special relativistic theory of a uniformly
translating mirror with an arbitrary angle of incidence and direction of
propagation in the non-relativistic limit. We show that it is in good agreement
with a more intuitive derivation that only considers the constancy of the speed
of light. We confirm the theory with phase-insensitive frequency measurements
using a liquid crystal light valve
Light That Appears to Come from a Source That Does Not Exist
Superoscillatory, band-limited functions oscillate faster than their fastest Fourier component. Superoscillations have been intensively explored recently as they give rise to many out-of-the-spectrum phenomena entailing both fundamental and applied significance. We experimentally demonstrate a form of superoscillations which is manifested by light apparently coming from a source located far away from the actual one. These superoscillations are sensed through sharp transverse shifts in the local wave vector at the minima of a pinhole diffraction pattern. We call this phenomenon “optical ventriloquism.