Generating arbitrary laser beam shapes through phase-mapped designed beam splitting

Author(s)

Silva, Pedro Faleiros ; Muniz, Sergio Ricardo ; IEEE

• Document type: Journal article
• Source: 2021 SBFOTON INTERNATIONAL OPTICS AND PHOTONICS CONFERENCE (SBFOTON IOPC); v. N/A, p. 4-pg., 2021-01-01.

Abstract

We describe a method to generate high-definition arbitrary laser beam shapes and profiles useful to many applications, ranging from optical patterning and lithography to optical trapping of microscopic particles and ultracold atoms. The phase contrast between a binary grating and a targeted intensity distribution is encoded on a spatial light modulator to control light diffraction, producing very sharp, speckles-free, and smooth images. Besides simplicity, not requiring additional phase-plates, the method provides straightforward encoding of images onto phase-only masks by a direct pixel mapping, allowing simpler feedback schemes to correct and control light distributions and optical potentials in real-time. (AU)

• FAPESP's process: 19/27471-0 - Development of new experimental platforms for the study of nanothermodynamics and the information-energy relation in the quantum-classic boundary
• Grantee: Sérgio Ricardo Muniz
• Support Opportunities: Regular Research Grants