O-K Lim et al 2004 J. Opt. A: Pure Appl. Opt. 6 486 doi:10.1088/1464-4258/6/5/032
O-K Lim1, B Boland1, M Saffman1 and W Krolikowski2
Show affiliationsWe demonstrate the generation and frequency doubling of unit charge vortices in a linear astigmatic resonator. The 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.
42.65.Ky Frequency conversion; harmonic generation, including higher-order harmonic generation
42.60.Da Resonators, cavities, amplifiers, arrays, and rings
Issue 5 (May 2004)
Received 18 September 2003, accepted for publication 18 November 2003
Published 14 April 2004
O-K Lim et al 2004 J. Opt. A: Pure Appl. Opt. 6 486
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