Axial sub-Fourier focusing of an optical beam

Author(s):

Thomas Zacharias and Barak Hadad and Alon Bahabad and Yaniv Eliezer

Abstract:

“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.”

Link to Publications Page

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