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

TitleGenerating a three-dimensional dark focus from a single conically refracted light beam
Publication TypeJournal Article
Year of Publication2013
AuthorsLoiko, YV, Turpin, A, Kalkandjiev, TK, Rafailov, EU, Mompart, J
JournalOptics Letters
Volume38
Start Page4648
Issue22
Pagination4648–4651
Date Published11/2013
ISSN0146-9592
KeywordsBirefringence, Laser cooling, Laser materials processing, Laser trapping
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 KGd(WO4)2 biaxial crystal, reporting the generation of a bottle beam in full agreement with our theoretical investigations.

URLhttp://ol.osa.org/abstract.cfm?URI=ol-38-22-4648
DOI10.1364/OL.38.004648
Reprint Editionhttp://arxiv.org/abs/1409.1853
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