Visualization of magnetic fields with cylindrical vector beams in a warm atomic vapor

Abstract

We propose and demonstrate an experimental implementation for the observation of magnetic fields from spatial features of absorption profiles in a warm atomic vapor. A radially polarized vector beam that traverses an atomic vapor will generate an absorption pattern with petal-like structure by the mediation of a transverse magnetic field (TMF). The spatial absorption pattern rotates when the azimuthal angle of the TMF is changed, while its contrast decreases when the longitudinal component of the magnetic field increases. By analyzing the intensity distribution of the transmitted pattern we can determine the magnetic field strength. Our work provides a framework for investigating three-dimensional magnetic field distributions based on atoms.

References in corpus (10)

• Optical spin-to-orbital angular momentum conversion in inhomogeneous anisotropic media
• Storage and retrieval of vector beams of light in a multiple-degree-of-freedom quantum memory
• Spatially dependent electromagnetically induced transparency
• Vectorial light-matter interaction -- exploring spatially structured complex light fields
• Polarization shaping for control of nonlinear propagation
• Vector Vortex Beam Emitter Embedded in a Photonic Chip
• Measurements of vector magnetic field using multiple electromagnetically induced transparency resonances in Rb vapor
• An atomic compass -- detecting 3D magnetic field alignment with vector vortex light
• Pump-probe nonlinear magneto-optical rotation with frequency modulated light
• Magnetic-field-induced rotation of light with orbital angular momentum