Instabilities in transverse optical binding of dielectric particles

Simon Hanna; Michael J. O'Donnell

doi:10.1117/12.3029917

3 October 2024 Instabilities in transverse optical binding of dielectric particles

Simon Hanna, Michael J. O'Donnell

Author Affiliations +

Proceedings Volume PC13112, Optical Trapping and Optical Micromanipulation XXI; PC131121B (2024) https://doi.org/10.1117/12.3029917
Event: Nanoscience + Engineering, 2024, San Diego, California, United States

Abstract

In counter propagating plane waves, spherical beads occupy the interference fringes and optically bind with separations of around a wavelength. The binding strength depends on particle size and refractive index with the particle arrangement also dependent on the polarisation. Some combinations of refractive index and size do not optically bind: instead, the particles experience a force in the propagation direction that leads to a transition to longitudinal binding. These instabilities are assessed computationally with different particle numbers and polarisation states.

Conference Presentation

Citation Download Citation

Simon Hanna and Michael J. O'Donnell "Instabilities in transverse optical binding of dielectric particles", Proc. SPIE PC13112, Optical Trapping and Optical Micromanipulation XXI, PC131121B (3 October 2024); https://doi.org/10.1117/12.3029917

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