Axial sub-Fourier focusing of an optical beam


Thomas Zacharias and Barak Hadad and Alon Bahabad and Yaniv Eliezer


“We demonstrate experimentally the generation of an optical beam having an axial focusing that is narrower than the Fourier limit. The beam is constructed from a superposition of Bessel beams with different longitudinal wave vectors, realizing a super-oscillatory axial intensity distribution. Such beams can be useful for microscopy and for optical particle manipulation.”

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Publication: Optics Letters
Issue/Year: Optics Letters Vol. 42, Issue 16, pp. 3205-3208 (2017)
DOI: 10.1364/OL.42.003205