Particle manipulation beyond the diffraction limit using structured super-oscillating light beams

• DOI: 10.1038/lsa.2017.50
• Publication Date: 2017-09-08T06:21:08Z
• Authors: Brijesh K Singh; Harel Nagar; Yael Roichman; Ady Arie
• Keywords: Spatial light modulator; Numerical aperture; Aperture (computer memory)

The diffraction limited resolution of light focused by a lens was derived in 1873 Ernst Abbe. Later 1952, method to reach sub-diffraction spots proposed modulating the wavefront beam. In related development, super-oscillating functions, i.e. band functions that locally oscillate faster than their highest Fourier component, were introduced and experimentally applied for super-resolution microscopy. Up till now, only simple Gaussian-like used. Here we show amplitude phase profile these can be arbitrarily controlled. particular utilize Hermite-Gauss, Laguerre-Gauss Airy structure beams with lobes. These structured are then used high trapping manipulation nanometer-sized particles. potential provides unprecedented localization accuracy stiffness, significantly exceeding those provided standard beams.