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Nodal Areas and Structured Darkness
Garreth J. Ruane, Sergei Slussarenko, Lorenzo Marrucci +1
Generalized beams of light that are made to turn inside out, creating black nodal areas of total destructive interference are described. As an example we experimentally created an…
Photonic polarization gears for ultra-sensitive angular measurements
V. D'Ambrosio, N. Spagnolo, L. Del Re +7
Quantum metrology bears a great promise in enhancing measurement precision, but is unlikely to become practical in the near future. Its concepts can nevertheless inspire classical…
Direct measurement of the orbital angular momentum mean and variance in an arbitrary paraxial optical field
Bruno Piccirillo, Sergei Slussarenko, Lorenzo Marrucci +1
We introduce and experimentally demonstrate a method for measuring at the same time the mean and the variance of the photonic orbital angular momentum (OAM) distribution in any par…
Reconstructing the Poynting vector skew angle and wave-front of optical vortex beams via two-channel moiré deflectometery
Mohammad Yeganeh, Saifollah Rasouli, Mohsen Dashti +3
A novel approach based on the two-channel moiré deflectometry has been used to measure both wave-front and transverse component of the Poynting vector of an optical vortex beam. Ge…