Generating a three dimensional dark focus from a single conically refracted light beam

Abstract

We report here the generation of a three dimensional dark focus from a single focused monochromatic Gaussian beam that undergoes conical refraction when it propagates along one of the optic axes of a biaxial crystal. We study the resulting ring intensity pattern behind the crystal as a function of the ratio between the ring radius and the beam waist and derive the particular parameter values for which a three dimensional dark focus with null intensity at the ring center is formed. We have performed experiments with a $\mathrm{KGd}(\mathrm{W}{\mathrm{O}}_4{)}_2$ biaxial crystal reporting the generation of a bottle beam in full agreement with our theoretical investigations.

5 pages, 4 figures

References in corpus (4)

• Angular Momenta and Spin-Orbit Interaction of Nonparaxial Light in Free Space
• A Waveguide for Bose-Einstein Condensates
• Atom trapping in an interferometrically generated bottle beam trap
• A crossed vortex bottle beam trap for single-atom qubits

Cited by in corpus (7)

• Blue-detuned optical ring trap for Bose-Einstein condensates based on conical refraction
• Polarization tailored novel vector beams based on conical refraction
• Super-Gaussian conical refraction beam
• On the dual-cone nature of the conical refraction phenomenon
• Light propagation in biaxial crystals
• Trapping of Bose-Einstein condensates in a three-dimensional dark focus generated by conical refraction
• Conical refraction healing after partially blocking the input beam