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

Gyroscope01:02

Gyroscope

A gyroscope is defined as a spinning disk in which the axis of rotation is free to assume any orientation. When spinning, the orientation of the spin axis is unaffected by the orientation of the body that encloses it. The body or vehicle enclosing the gyroscope can be moved from place to place, while the orientation of the spin axis remains the same. This makes gyroscopes very useful in navigation, especially where magnetic compasses cannot be used, such as in crewed and crewless spacecraft,...
Gyroscope: Precession01:24

Gyroscope: Precession

Precession can be demonstrated effectively through a spinning top. If a spinning top is placed on a flat surface near the surface of the Earth at a vertical angle and is not spinning, it will fall over due to the force of gravity producing a torque acting on its center of mass. However, if the top is spinning on its axis, it precesses about the vertical direction, rather than topple over due to this torque. Precessional motion is a combination of a steady circular motion of the axis and the...
Galvanometer01:24

Galvanometer

Common devices, including car instrument panels, battery chargers, and inexpensive electrical instruments, measure potential difference (voltage), current, or resistance using a d'Arsonval galvanometer. This electromechanical instrument is also known as a moving coil galvanometer.
The galvanometer consists of  two concave-shaped permanent magnets, providing a uniform radial magnetic field in the annular region. In the center, a pivoted coil of fine copper wire is placed in the uniform magnetic...

You might also read

Related Articles

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

Sort by
Same author

Controlled optical thermalization in quasiperiodic photonic lattices.

Chaos (Woodbury, N.Y.)·2025
Same author

Topological modes in a laser cavity through exceptional state transfer.

Science (New York, N.Y.)·2022
Same author

Dark-state lasers: mode management using exceptional points.

Optics letters·2016
Same author

Visible supercontinuum generation in a graded index multimode fiber pumped at 1064  nm.

Optics letters·2016
Same author

Erratum: New Steady-State Quiescent High-Confinement Plasma in an Experimental Advanced Superconducting Tokamak [Phys. Rev. Lett. 114, 055001 (2015)].

Physical review letters·2015
Same author

Parity-time-symmetric coupled microring lasers operating around an exceptional point.

Optics letters·2015

Related Experiment Video

Updated: Jun 30, 2026

Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

Ultrasensitive micro-scale parity-time-symmetric ring laser gyroscope.

J Ren, H Hodaei, G Harari

    Optics Letters
    |April 15, 2017
    PubMed
    Summary
    This summary is machine-generated.

    We developed a novel ultrasensitive laser gyroscope using exceptional points. This enhances sensitivity to low angular rotations by orders of magnitude, enabling miniature on-chip devices.

    More Related Videos

    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
    12:19

    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

    Published on: April 4, 2017

    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

    Related Experiment Videos

    Last Updated: Jun 30, 2026

    Implementation of a Reference Interferometer for Nanodetection
    16:11

    Implementation of a Reference Interferometer for Nanodetection

    Published on: April 26, 2014

    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
    12:19

    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

    Published on: April 4, 2017

    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

    Area of Science:

    • Physics
    • Optical Engineering
    • Quantum Optics

    Background:

    • Laser gyroscopes are crucial for navigation and sensing.
    • Current technologies face limitations in sensitivity and miniaturization.
    • Exceptional points in non-Hermitian systems offer unique physical properties.

    Purpose of the Study:

    • To propose a new scheme for ultrasensitive laser gyroscopes.
    • To leverage exceptional points for enhanced sensitivity to rotation.
    • To explore the potential for miniature on-chip laser gyroscopes.

    Main Methods:

    • Utilizing the physics of exceptional points in a laser gyroscope setup.
    • Analyzing the rotation-induced frequency splitting in the proposed system.
    • Investigating the dependence of sensitivity on gyration speed and device radius.

    Main Results:

    • Demonstrated that frequency splitting is proportional to the square root of gyration speed (Ω).
    • Achieved orders of magnitude enhancement in sensitivity to low angular rotations.
    • Showed that maximum sensitivity is independent of the ring radius.

    Conclusions:

    • The proposed scheme offers a pathway to ultrasensitive laser gyroscopes.
    • Exceptional points provide a significant advantage for detecting small rotations.
    • This work enables the development of new miniature ring laser gyroscopes on chip.