Study on the diffraction light field of two special beams through a cylindrical lens

Cylindrical lens is irreplaceable in the field of beam manipulation, which can generate new types of light field by diffraction effect, providing possible tools in micrography, optical micromanipulation and biomedicine field in future. The diffraction light field distributions of the Bessel beam and bottle beam passed though a cylindrical lens are studied in this paper using both experiment and simulation methods. In terms of simulation, Collins formula, combined Huygens Fresnel diffraction integral formula and optical matrix, is used to calculate the diffraction patterns. Specially, the thickness and refractive factors of the lenses in the optical system are introduced into the matrices in this paper, so that the lens is no longer approximated as a thin film, and the bottle beam diffracted by a cylindrical lens is first studied. The simulation and experimental images are broadly consistent for both those two diffraction phenomena.