Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Coupled effects of cavity photon lifetime, oscillation threshold, and group-velocity mismatch on pulse width evolution in a nanosecond-pumped SRO-OPO.

Optics express·2026
Same author

Engineering molecular rotor-stator ligand architectures on copper nanoclusters for efficient photothermal conversion.

Nature communications·2026
Same author

Insights into Racemization of Metal Nanoclusters and Strategic Spontaneous Resolution.

ACS nano·2026
Same author

Enhanced spinosad production in <i>Saccharopolyspora spinosa</i> by employing mannose as an extracellular carbon reservoir and optimizing acetyl-CoA supply pathway.

Synthetic and systems biotechnology·2026
Same author

Systematic Engineering of Proteases in Saccharopolyspora Spinosa Reveals Synergistic Enhancement of Spinosad Biosynthesis via Substrate Flux Optimization.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Integrating Robotic Bilateral Axillo-Breast Approach Thyroidectomy with Molecular Diagnostics and Artificial Intelligence in Thyroid Cancer Care.

Biomolecules & therapeutics·2025

Related Experiment Video

Updated: Aug 25, 2025

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
09:10

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Published on: April 24, 2014

27.9K

Narrow laser-linewidth measurement using short delay self-heterodyne interferometry.

Zhongan Zhao, Zhenxu Bai, Duo Jin

    Optics Express
    |October 15, 2022
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a new method for measuring laser linewidth using delayed self-heterodyne interferometry with short fibers. The technique accurately determines linewidth by analyzing signal data points, avoiding noise from long fibers.

    More Related Videos

    Implementation of a Reference Interferometer for Nanodetection
    16:11

    Implementation of a Reference Interferometer for Nanodetection

    Published on: April 26, 2014

    9.4K
    Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
    07:42

    Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

    Published on: December 15, 2021

    3.2K

    Related Experiment Videos

    Last Updated: Aug 25, 2025

    Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
    09:10

    Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

    Published on: April 24, 2014

    27.9K
    Implementation of a Reference Interferometer for Nanodetection
    16:11

    Implementation of a Reference Interferometer for Nanodetection

    Published on: April 26, 2014

    9.4K
    Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
    07:42

    Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

    Published on: December 15, 2021

    3.2K

    Area of Science:

    • Optics and Photonics
    • Laser Physics
    • Metrology

    Background:

    • Delayed self-heterodyne interferometry is standard for laser linewidth measurement.
    • Long delay fibers, typically needed for narrow linewidths, introduce losses and 1/f noise, broadening spectral lines.
    • Existing methods face challenges with noise and system complexity.

    Purpose of the Study:

    • To present a novel calculation method for determining laser linewidth.
    • To enable linewidth measurement using a short delay fiber in a delayed self-heterodyne setup.
    • To overcome limitations associated with long fibers, such as system losses and 1/f noise.

    Main Methods:

    • A calculation method processing output from a delayed self-heterodyne setup with a short delay fiber.
    • Utilizing pairs of data points (adjacent maxima/minima) in the self-heterodyne signal.
    • Analyzing the power ratio or amplitude difference at these data points.

    Main Results:

    • The proposed method accurately determines laser linewidth.
    • It effectively avoids the 1/f noise introduced by long fibers.
    • Experimental results confirm high calculation accuracy.

    Conclusions:

    • The new method offers an accurate and flexible approach to laser linewidth measurement.
    • It simplifies the experimental setup by using short fibers, reducing noise and losses.
    • This technique enhances usability for real-world applications, especially for kHz-range linewidths.