Spin-to-Orbital Angular Momentum Conversion in Semiconductor Microcavities

Abstract

We experimentally demonstrate a technique for the generation of optical beams carrying orbital angular momentum using a planar semiconductor microcavity. Despite being isotropic systems, the transverse electric - transverse magnetic (TE-TM) polarization splitting featured by semiconductor microcavities allows for the conversion of the circular polarization of an incoming laser beam into the orbital angular momentum of the transmitted light field. The process implies the formation of topological entities, a pair of optical half-vortices, in the intracavity field.

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• Helicity and Angular Momentum. A Symmetry based framework for the study of Light-Matter Interactions
• Vortex and half-vortex dynamics in a spinor quantum fluid of interacting polaritons
• Efficient vortex generation in sub-wavelength epsilon-near-zero slabs
• Spin-noise-based magnetometry of an $n$-doped GaAs microcavity in the field of elliptically polarized light
• Half-Skyrmion Spin Textures In Polariton Microcavities
• Optical control of spin textures in quasi-one-dimensional polariton condensates
• Polariton pattern formation and photon statistics of the associated emission
• Controlling the optical spin Hall effect with light
• Excitation of exciton-polariton vortices in pillar microcavities by a Gaussian beam
• Magnetic Field Control of the Optical Spin Hall Effect
• Interaction-enhanced flow of a polariton persistent current in a ring
• Screening nearest-neighbor interactions in networks of exciton-polariton condensates through spin orbit coupling
• Vortices in spinor cold exciton condensates with spin-orbit interaction
• Generic Optical Singularities in Brewster-reflected Post-paraxial Beam-fields
• Persistent polarization oscillations in ring-shape polariton condensates
• Topological turbulence in spin-orbit-coupled driven-dissipative quantum fluids of light generates high angular momentum states
• Theory of optically controlled anisotropic polariton transport in semiconductor double microcavities
• Discrete chiral ballistic polariton laser
• Pulse, polarization and topology shaping of polariton fuids
• Orbital angular momentum conversion of optical field without spin state