Analysis of Enhancement and Regulation of Surface Optical Pressure by Optical Nano-Structures

Abstract

Optical pressure, arising from the interaction between light and matter, is typically confined to the range of pico-Newtons to nano-Newtons, which limits its practical application in engineering. Here, we propose a two-dimensional aluminum periodic rectangular nano-structure designed to enhance and regulate optical pressure through electromagnetic simulations. The distribution characteristics and underlying mechanisms of optical pressure on the nano-structure's surface are analyzed. The findings reveal that when the dimensions of the nano-structure are tuned to resonate with the incident field, the rectangular nano-structure generates significantly enhanced optical pressure compared to a planar surface. Furthermore, the optical pressure can be precisely modulated by adjusting the geometric parameters of the nano-structure, such as depth, width, and sidewall inclination angle. Our work provides a theoretical foundation for the design and optimization of advanced optical pressure sensors and demonstrates potential applications in precision laser power measurement, non-destructive testing, and optical propulsion systems.