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Related Experiment Video

Updated: Feb 5, 2026

$Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing$

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing

Published on: April 25, 2019

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

Brijesh K Singh^1,2, Harel Nagar³, Yael Roichman³

¹School of Electrical Engineering, Fleischman Faculty of Engineering, Tel-Aviv University, Tel Aviv 6997801, Israel.

Light, Science & Applications

|September 1, 2018

Summary

This summary is machine-generated.

Researchers demonstrate arbitrary control over sub-diffraction light spots using structured super-oscillating beams. This breakthrough enables high-resolution particle trapping and manipulation with enhanced accuracy and stiffness.

Keywords:

beam shaping optical tweezers optical vortex super-oscillating beams

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Area of Science:

Optics and Photonics
Nanotechnology
Microscopy

Background:

The diffraction limit, established by Ernst Abbe in 1873, restricts optical resolution.
Sub-diffraction light spots were proposed in 1952 by wavefront modulation.
Super-oscillating functions enable super-resolution microscopy but have been limited to simple spot profiles.

Purpose of the Study:

To demonstrate arbitrary control over the amplitude and phase profile of sub-diffraction light spots.
To utilize structured super-oscillating beams for advanced optical manipulation.
To achieve unprecedented localization accuracy and stiffness in particle trapping.

Main Methods:

Structuring super-oscillating beams using Hermite-Gauss, Laguerre-Gauss, and Airy functions.
Generating sub-diffraction lobes with controlled amplitude and phase profiles.
Applying these structured beams for high-resolution trapping and manipulation of nanoparticles.

Main Results:

Arbitrary control over sub-diffraction spot profiles was achieved.
Structured super-oscillating beams with sub-diffraction lobes were successfully created.
High-resolution trapping and manipulation of nanometer-sized particles were demonstrated.

Conclusions:

The developed method offers superior localization accuracy and trapping stiffness compared to standard diffraction-limited beams.
Arbitrarily structured sub-diffraction beams open new possibilities in optical trapping and manipulation.
This work advances super-resolution techniques for nanoscale applications.