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Related Experiment Video

Updated: Jun 19, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Shape-invariance range of a light beam.

F Gori, S Vicalvi, M Santarsiero

|October 31, 2009

Summary

This study introduces a method to estimate the propagation range for axially symmetric light beams. This range ensures the beam maintains its transverse shape during paraxial free propagation.

Area of Science:

Optics and Photonics
Laser Physics

Background:

Axially symmetric light beams are fundamental in various optical applications.
Understanding beam propagation is crucial for designing optical systems.

Purpose of the Study:

To develop a general procedure for estimating the axial range over which a light beam maintains its transverse shape.
To provide a method for predicting beam propagation characteristics.

Main Methods:

Analysis of paraxial free propagation for axially symmetric beams.
Development of a general procedure for range estimation.

Main Results:

A method is presented to determine the propagation range where beam shape is preserved.
The procedure applies to typical axially symmetric light beams.

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

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Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

Related Experiment Videos

Last Updated: Jun 19, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

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

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

Conclusions:

The developed procedure offers a practical way to estimate beam propagation stability.
This work contributes to the understanding of light beam behavior in free space.