25 March 2015 Experimental generation of the longitudinal electric field component on the optical axis with high-numerical-aperture binary axicons
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Proceedings Volume 9533, Optical Technologies for Telecommunications 2014; 95330D (2015) https://doi.org/10.1117/12.2180738
Event: Optical Technologies for Telecommunications 2014, 2014, Kazan, Russian Federation
Abstract
We analytically and numerically show that by introducing the asymmetry into the axicon design it becomes possible to generate the longitudinal electric field (E-field) component on the optical axis for linearly and circularly polarized incident beams. Binary axicons with high numerical aperture (NA) are fabricated in three configurations – axisymmetric and spiral ones, and bi-axicon – by electron beam lithography. Experimental measurements for the near-field diffraction of most common and easy to implement incident beams – linearly and circularly polarized – are conducted. The experimental results agree with the theoretical analysis.
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S. V. Alferov, S. V. Alferov, S. N. Khonina, S. N. Khonina, S. V. Karpeev, S. V. Karpeev, D. A. Savelyev, D. A. Savelyev, "Experimental generation of the longitudinal electric field component on the optical axis with high-numerical-aperture binary axicons", Proc. SPIE 9533, Optical Technologies for Telecommunications 2014, 95330D (25 March 2015); doi: 10.1117/12.2180738; https://doi.org/10.1117/12.2180738
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