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Updated: May 8, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

Generating and measuring nondiffracting vector Bessel beams.

Angela Dudley¹, Yanming Li, Thandeka Mhlanga

¹CSIR National Laser Centre, Pretoria 0001, South Africa.

|August 31, 2013

Summary

This summary is machine-generated.

Researchers created nondiffracting vector Bessel beams using a spatial light modulator and q-plate. This simple method allows control over polarization and orbital angular momentum for applications in optics.

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Area of Science:

Optics and Photonics
Quantum Information Science

Background:

Nondiffracting vector Bessel beams offer unique properties for high-numerical-aperture focusing.
Their generation and manipulation are crucial for advanced optical applications.

Purpose of the Study:

To demonstrate a simple method for creating nondiffracting vector Bessel beams.
To explore control over polarization and modal properties using geometric and dynamic phases.
To investigate single-charged and superposed Bessel beams.

Main Methods:

Utilized a spatial light modulator (SLM) for beam shaping.
Employed a q-plate, an azimuthally varying birefringent plate, for polarization control.
Performed polarization and modal decomposition to analyze the vector field.

Main Results:

Successfully generated nondiffracting vector Bessel beams with a simple setup.
Demonstrated control over both geometric and dynamic phases.
Achieved good agreement between experimental results and theoretical predictions for Bessel beams and their superpositions.

Conclusions:

The q-plate and SLM method provides an accessible route to generating versatile nondiffracting vector beams.
These beams, with controllable orbital angular momentum and polarization, are promising for optical trapping, microscopy, and optical communication.