Off-axis optical vortices using double-Raman singlet and doublet light-matter schemes
Hamid Reza Hamedi,
Julius Ruseckas,
Emmanuel Paspalakis
et al.
Abstract:We study the formation of off-axis optical vortices propagating inside a double-Raman gain atomic medium. The atoms interact with two weak probe fields as well as two strong pump beams which can carry orbital angular momentum (OAM). We consider a situation when only one of the strong pump lasers carries an OAM. A particular superposition of probe fields coupled to the matter is shown to form specific optical vortices with shifted axes. Such off-axis vortices can propagate inside the medium with sub-or superlum… Show more
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