Abstract
We report here the generation of a three-dimensional (3D) 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 3D dark focus with null intensity at the ring center is formed. We have performed experiments with a biaxial crystal, reporting the generation of a bottle beam in full agreement with our theoretical investigations.
© 2013 Optical Society of America
Full Article | PDF ArticleMore Like This
A. Turpin, Yu. V. Loiko, T. K. Kalkandkiev, H. Tomizawa, and J. Mompart
Opt. Lett. 39(15) 4349-4352 (2014)
Alex Turpin, Yurii V. Loiko, Todor K. Kalkandjiev, Jose Trull, Crina Cojocaru, and Jordi Mompart
Opt. Lett. 38(14) 2484-2486 (2013)
A. Turpin, V. Shvedov, C. Hnatovsky, Yu. V. Loiko, J. Mompart, and W. Krolikowski
Opt. Express 21(22) 26335-26340 (2013)