Optical trapping based on microring resonators with a transverse slot structure

• DOI: 10.1364/ao.500846
• Publication Date: 2023-08-29T19:00:29Z
• Authors: Zheng Li; Yi Cheng; Jin Liu; Guanju Peng
• Keywords: Optical force; Waveguide; Optical power; Optical cavity

Over the past few decades, optical manipulation has emerged as a highly successful tool in various fields such biology, micro/nanorobotics, and physics. Among different techniques, transverse slot waveguide shown remarkable potential enhancing field significantly improving trapping capabilities. Additionally, microring resonators have demonstrated ability to enhance at specific resonance wavelengths, enabling capture of particles. In this study, we investigated impact structure on nanoparticle by introducing 50 nm 5 µm resonator. Through integration resonator, observed substantial increase maximum bound power for nanosphere with refractive index 1.6 diameter nm, reaching 3988.8 pN/W. This value is 2292 times higher than force straight 2.266 The proposed enhances capabilities nanoscale particles, thus paving way development advanced micro/nanomanipulation techniques.