OPTO-IT

Analysis of laser beam diffraction by axicon with the numerical aperture above limiting

A. V. Ustinov^ab, S. N. Khonina<sup>ab

a</sup> Samara State Aerospace University
^b Image Processing Systems Institute, Russian Academy of Sciences

Abstract: The theoretical analysis of plane wave diffraction by axicon in the zone of evanescent waves is executed. The received analytical estimations are qualitatively in accordance with results of numerical calculations in nonparaxial scalar wave model.

Keywords: axicon, limiting numerical aperture, evanescent waves.

Received: 31.03.2014