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Light beams with volume superoscillations

Thomas Zacharias and Alon Bahabad

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Abstract

Using a superposition of shifted Bessel beams with different longitudinal wave vectors and orbital angular momenta, we realize an optical beam having simultaneous axial, angular, and radial focusing narrower than the Fourier limit. Our findings can be useful for optical particle manipulation and high-resolution microscopy.

© 2020 Optical Society of America

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