Analytical model of the optical vortex microscope

作者：Plocinniczak Lukasz; Popiolek Masajada Agnieszka; Masajada Jan^*; Szatkowski Mateusz

来源：Applied Optics, 2016, 55(12): B20-B27.

DOI：10.1364/AO.55.000B20

This paper presents an analytical model of the optical vortex scanning microscope. In this microscope the Gaussian beam with an embedded optical vortex is focused into the sample plane. Additionally, the optical vortex can be moved inside the beam, which allows fine scanning of the sample. We provide an analytical solution of the whole path of the beam in the system (within paraxial approximation)-from the vortex lens to the observation plane situated on the CCD camera. The calculations are performed step by step from one optical element to the next. We show that at each step, the expression for light complex amplitude has the same form with only four coefficients modified. We also derive a simple expression for the vortex trajectory of small vortex displacements.

• 出版日期2016-4-20