|Title||Transformation of vector beams with radial and azimuthal polarizations in biaxial crystals|
|Publication Type||Journal Article|
|Year of Publication||2015|
|Authors||Turpin, A, Vargas, A, Lizana, A, Torres-Ruiz, FA, Estévez, I, Moreno, I, Campos, J, Mompart, J|
|Journal||J. Opt. Soc. Am. A|
|Keywords||Birefringence, Crystal optics, Polarization|
We present both experimentally and theoretically the transformation of radially and azimuthally polarized vector beams when they propagate through a biaxial crystal and are transformed by the conical refraction phenomenon. We show that, at the focal plane, the transverse pattern is formed by a ring-like light structure with an azimuthal node, this node being found at diametrically opposite points of the ring for radial/azimuthal polarizations. We also prove that the state of polarization of the transformed beams is conical refraction-like, i.e., that every two diametrically opposite points of the light ring are linearly orthogonally polarized.