[17p-C104-1~9] SP5 JSAP-SPIE Joint Symposium

▲ [17p-C104-3] Eigenmode structured illumination for optical micro-manipulation

〇Michael Mazilu¹ (1.Univ. of St. Andrews)

Keywords:structured illumination

One method to determine the optimal beam profile for optical micro-manipulation is through the use of the optical eigenmode approach. Here, we use this approach together with the Mie scattering formalism to describe the quadratic relationship between the incident field and the optical forces acting on the scattering objects. This allows the introduction of solutions of Maxwell’s equation corresponding to orthogonal structured illuminations, which can be ordered by optical trapping efficiency, for example. The orthogonal eigenmode with the largest trapping efficiency will then correspond to the optimal beam for the optical system considered. These optimal beams can then be used to design and optimise nanophotonic devices, such as meta-surfaces, which enhance the coupling between the incident light field and these optimal beams.