80 citations · 323 across the 10 of their papers we have counts for
10 papers
On the dual-cone nature of the conical refraction phenomenon
Alex Turpin, Yury V. Loiko, Todor K. Kalkandjiev +2
In conical refraction (CR), a focused Gaussian input beam passing through a biaxial crystal and parallel to one of the optic axes is transformed into a pair of concentric bright ri…
Conical refraction healing after partially blocking the input beam
Alex Turpin, Yury V. Loiko, Todor K. Kalkandjiev +2
In conical refraction, when a focused Gaussian beam passes along one of the optic axes of a biaxial crystal it is transformed into a pair of concentric bright rings at the focal pl…
Light propagation in biaxial crystals
Alex Turpin, Yury V. Loiko, Todor K. Kalkandjiev +1
We present a formalism able to predict the transformation of light beams passing through biaxial crystals. We use this formalism to show both theoretically and experimentally the t…
Polarization tailored novel vector beams based on conical refraction
A. Turpin, Yu. V. Loiko, A. Peinado +4
Coherent vector beams with involved states of polarization (SOP) are widespread in the literature, having applications in laser processing, super-resolution imaging and particle tr…
Blue-detuned optical ring trap for Bose-Einstein condensates based on conical refraction
A. Turpin, J. Polo, Yu. V. Loiko +6
We present a novel approach for the optical manipulation of neutral atoms in annular light structures produced by the phenomenon of conical refraction occurring in biaxial optical…
Super-Gaussian conical refraction beam
A. Turpin, Yu. V. Loiko, T. K. Kalkandkiev +2
We demonstrate the transformation of Gaussian input beams into super-Gaussian beams with a quasi flat-top transverse profile by means of the conical refraction phenomenon by adjust…
Wave-vector and polarization dependence of conical refraction
A. Turpin, Yu. V. Loiko, T. K. Kalkandjiev +2
We experimentally address the wave-vector and polarization dependence of the internal conical refraction phenomenon by demonstrating that an input light beam of elliptical transver…
Optical vault: reconfigurable bottle beam by conically refracted light
A. Turpin, V. Shvedov, C. Hnatovsy +3
We employ conical refraction of light in a biaxial crystal to create an optical bottle for trapping and manipulation of particles. We show that by just varying the polarization of…
Generating a three dimensional dark focus from a single conically refracted light beam
Yu. V. Loiko, A. Turpin, T. K. Kalkandjiev +2
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…
Coherent injecting, extracting, and velocity filtering of neutral atoms in a ring trap via spatial adiabatic passage
Yurii Loiko, Veronica Ahufinger, Ricard Menchon-Enrich +2
We introduce here a coherent technique to inject, extract, and velocity filter neutral atoms in a ring trap coupled via tunneling to two additional waveguides. By adiabatically fol…