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Related Experiment Video

Updated: Jun 6, 2026

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
06:16

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

Published on: April 25, 2019

Entropy-based definition of laser beam spot size.

M A Porras, R Medina

    Applied Optics
    |November 12, 2010
    PubMed
    Summary

    This study introduces novel, information-entropy-based definitions for laser beam characteristics like spot size and divergence angle. These new metrics offer a unique perspective on laser beam quality and properties.

    Area of Science:

    • Optics and Photonics
    • Information Theory

    Background:

    • Traditional laser beam characterization relies on geometric and physical optics principles.
    • Existing metrics may not fully capture the information content or quality of complex laser beams.

    Purpose of the Study:

    • To propose new definitions for key laser beam parameters: spot size, mean curvature radius, divergence angle, and quality.
    • To base these definitions on Shannon's information-entropy formula.
    • To investigate the properties of these novel, entropy-based metrics.

    Main Methods:

    • Application of Shannon's information-entropy formula to define laser beam properties.
    • Theoretical analysis of the derived entropy-based parameters.
    • Comparative study with existing laser beam characterization methods (implied).

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    A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
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    A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

    Published on: April 28, 2023

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    Last Updated: Jun 6, 2026

    Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
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    Published on: April 25, 2019

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
    08:39

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

    Published on: January 28, 2019

    A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
    10:13

    A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks

    Published on: April 28, 2023

    Main Results:

    • New, information-entropy-based definitions for spot size, mean curvature radius, divergence angle, and beam quality.
    • Demonstration of the theoretical properties and implications of these new definitions.
    • Potential for a more comprehensive understanding of laser beam characteristics.

    Conclusions:

    • The proposed information-entropy-based definitions offer a novel framework for laser beam characterization.
    • These metrics provide new insights into laser beam properties beyond traditional approaches.
    • Further research can explore the experimental validation and application of these entropy-based parameters.