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Single-aperture STED illumination using a q-plate and fiber

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Abstract

We demonstrate single-aperture STED nanoscopy illumination with vortex-fiber modes excited by a dispersive q=1/2 plate at visible wavelengths. The vortex-fiber-compatible bias-voltage-tunable mode conversion of q-plates enables easy switching between multiple STED-wavelength pairs.

© 2015 Optical Society of America

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