Geometric interpretation of radiation pressure

Alexander Trowbridge; Kishan Dholakia

doi:10.1117/12.3028637

3 October 2024 Geometric interpretation of radiation pressure

Alexander Trowbridge, Kishan Dholakia

Proceedings Volume PC13112, Optical Trapping and Optical Micromanipulation XXI; PC1311210 (2024) https://doi.org/10.1117/12.3028637
Event: Nanoscience + Engineering, 2024, San Diego, California, United States

Abstract

When light, or electromagnetic radiation, impacts a surface, it generates a force known as radiation pressure. In this study, we explore the radiation pressure generated by a finite, structured light beams and how it differs from that of a plane wave at an identical frequency. A notable characteristic of structured beams, especially as they pass through their focal point, is the accumulation of an extra phase shift, unlike a plane wave traveling the same distance. This phenomenon, known as the Gouy phase, underpins the difference in radiation pressure that we observe. One case we focus on is for Laguerre-Gaussian modes, and we detail specific experimental approaches to quantify the variance in radiation pressure, which amounts to approximately 20fN/W for each unit of orbital angular momentum.

Conference Presentation

Citation Download Citation

Alexander Trowbridge and Kishan Dholakia "Geometric interpretation of radiation pressure", Proc. SPIE PC13112, Optical Trapping and Optical Micromanipulation XXI, PC1311210 (3 October 2024); https://doi.org/10.1117/12.3028637

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