Behavior of asymmetric Bessel beam in focal plane of high numerical aperture objective

Sergey S. Stafeev; Victor V. Kotlyar; Alexey P. Porfirev

doi:10.1117/12.2229749

21 April 2016 Behavior of asymmetric Bessel beam in focal plane of high numerical aperture objective

Sergey S. Stafeev, Victor V. Kotlyar, Alexey P. Porfirev

Proceedings Volume 9917, Saratov Fall Meeting 2015: Third International Symposium on Optics and Biophotonics and Seventh Finnish-Russian Photonics and Laser Symposium (PALS); 991736 (2016) https://doi.org/10.1117/12.2229749
Event: Saratov Fall Meeting 2015, 2015, Saratov, Russian Federation

Abstract

Tight focusing of a linearly-polarized asymmetric Bessel beam, which has a crescent profile, was investigated numerically and experimentally. FDTD calculations show that a binary zone plate of numerical aperture NA = 0.995 forms a crescent in the focal plane, which is rotated clockwise around the optical axis, moving away from the focal plane. Using the Debye formulae it was shown that a direction of polarization of incident light has a significant influence on intensity distribution in focal plane. The crescent in the focal plane was also observed experimentally by focusing of the asymmetric Bessel beam using an immersive objective (NA = 1.25).

Citation Download Citation

Sergey S. Stafeev, Victor V. Kotlyar, and Alexey P. Porfirev "Behavior of asymmetric Bessel beam in focal plane of high numerical aperture objective", Proc. SPIE 9917, Saratov Fall Meeting 2015: Third International Symposium on Optics and Biophotonics and Seventh Finnish-Russian Photonics and Laser Symposium (PALS), 991736 (21 April 2016); https://doi.org/10.1117/12.2229749

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