Vectorial vortex generation and phase singularities upon Brewster reflection

Abstract

We experimentally demonstrate the emergence of a purely azimuthally polarized vectorial vortex beam with a phase singularity upon Brewster reflection of focused circularly polarized light from a dielectric substrate. The effect originates from the polarizing properties of the Fresnel reflection coefficients described in Brewster's law. An astonishing consequence of this effect is that the reflected field's Cartesian components acquire local phase singularities at Brewster's angle. Our observations are crucial for polarization microscopy and open new avenues for the generation of exotic states of light based on spin-to-orbit coupling, without the need for sophisticated optical elements.

7 pages, 6 figures

References in corpus (10)

• Optical spin-to-orbital angular momentum conversion in inhomogeneous anisotropic media
• Electromagnetic Force and Momentum
• Electromagnetic Angular Momentum
• Angular Momenta and Spin-Orbit Interaction of Nonparaxial Light in Free Space
• Efficient vortex generation in sub-wavelength epsilon-near-zero slabs
• How to create and detect N-dimensional entangled photons with an active phase hologram
• Spin and Orbital Angular Momenta of Light Reflected from a Cone
• Achromatic orbital angular momentum generator
• Huygens' Dipole for Polarization-Controlled Nanoscale Light Routing
• Helical mode conversion using conical reflector