A refracting system is designed for transforming an annular Gaussian laser beam into a circular Bessel beam. The slope of the input and output surfaces fitted well with a sixth-order polynomial. The radii of curvature of the resulting aspheric surfaces are found to vary smoothly over the surface. The diffraction-free length for this system is found to be 59.4735 m at 633 nm.
© 1998 Optical Society of America
Muhammad Arif, Meer M. Hossain, Abdul Ahad S. Awwal, and Muhammad N. Islam, "Refracting System for Annular Gaussian-to-Bessel Beam Transformation," Appl. Opt. 37, 649-652 (1998)