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Split-ring-resonator micro-arrays are created by focusing a phase-modulated circularly polarised vortex beam through a high numerical aperture objective. Based on the unique optical properties of vortex beams, we shift the spatial positions of the phase vortices to manipulate the intensity distribution at each focal spot, which leads to the creation of a multifocal array of split-ring-resonators. The predicted split-ring-resonator micro-array is fabricated in a polymer material by a single exposure of a femtosecond laser beam.
© 2012 Optical Society of America
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