Abstract
Axial light distribution modulation is widely applied in optical tweezers, hard-brittle material cutting, multilayer laser direct writing, etc. To generate arbitrary axial light distribution, the coordinate-transformation iteration (CTI) algorithm is presented. The CTI algorithm unifies equations in low and high numerical aperture (NA) scenarios, using the same iterative algorithm to produce phase computer-generated holograms. In a low NA scenario, twin-foci, flattop, and ${{\rm \sin}^2}$ distributions have been achieved. In high NA scenarios, multirings, multifoci, and needle-like distributions have been realized in simulation with specific polarized incident beams. Since the CTI algorithm is inherently an efficient one-dimensional phase retrieval algorithm that is not limited by NA, this method has the potential to become a well-received solution for axial light distribution modulation.
© 2022 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Víctor-Manuel Rico-Botero and Pedro Negrete-Regagnon
Appl. Opt. 59(18) 5553-5559 (2020)
Alexander V. Kuzmenko and Pavel V. Yezhov
Appl. Opt. 46(30) 7392-7400 (2007)
Huadong Zheng, Chaojun Zhou, Xinghua Shui, and Yingjie Yu
Appl. Opt. 61(5) B262-B270 (2022)