Creation, doubling, and splitting, of vortices in intracavity second harmonic generation
O-K Lim, B Boland, M Saffman, W. Krolikowski
Abstract
We demonstrate generation and frequency doubling of unit charge vortices in a linear astigmatic resonator. Topological instability of the double charge harmonic vortices leads to well separated vortex cores that are shown to rotate, and become anisotropic, as the resonator is tuned across resonance.
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