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Opt Express. 2013 Oct 7;21(20):23604-10. doi: 10.1364/OE.21.023604.

Handedness control in a 2-μm optical vortex parametric oscillator.

Abstract

We present the first handedness control of an optical vortex output from a vortex-pumped optical parametric oscillator. The handedness of the optical vortex was identical to that of the pump vortex beam. Over 2 mJ, 2-μm optical vortex with a topological charge of ± 1 was achieved. We found that the handedness of a fractional vortex with a half integer topological charge can also be selectively controlled.

PMID:
24104272
[PubMed]
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