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Related Experiment Video

Updated: Jun 20, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

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

Published on: August 12, 2013

Stochastic noise in TEM(00) laser beam position.

M D Levenson, W H Richardson, S H Perlmutter

    Optics Letters
    |September 16, 2009
    PubMed
    Summary

    Spontaneous emission causes laser beam centroids to fluctuate. This occurs when the laser medium emits light into unintended higher-order modes, affecting beam stability.

    Area of Science:

    • Laser physics
    • Quantum optics
    • Photonics

    Background:

    • Single-transverse-mode lasers are crucial for precision applications.
    • Beam centroid fluctuation can degrade laser performance.

    Purpose of the Study:

    • To investigate the cause of laser beam centroid fluctuations.
    • To understand the role of spontaneous emission in mode coupling.

    Main Methods:

    • Analysis of spontaneous emission processes in laser cavities.
    • Theoretical modeling of transverse mode excitation.

    Main Results:

    • Spontaneous emission into higher-order transverse modes is identified as the primary cause of centroid drift.
    • The rate of spontaneous emission directly correlates with the magnitude of centroid fluctuation.

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    Related Experiment Videos

    Last Updated: Jun 20, 2026

    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
    12:14

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

    Published on: August 12, 2013

    Implementation of a Nonlinear Microscope Based on Stimulated Raman Scattering
    09:13

    Implementation of a Nonlinear Microscope Based on Stimulated Raman Scattering

    Published on: July 6, 2019

    Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
    15:25

    Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

    Published on: February 4, 2018

    Conclusions:

    • Controlling spontaneous emission is key to stabilizing laser beam centroids.
    • Minimizing higher-order mode excitation can enhance laser beam pointing stability.