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

Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

191
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
191
Small-Signal Analysis of MOSFET Amplifiers01:23

Small-Signal Analysis of MOSFET Amplifiers

520
In small-signal analysis, a MOSFET transistor amplifier acts as a linear amplifier when operating in its saturation region. The gate-to-source voltage (VGS) of the MOSFET is the sum of the DC biasing voltage and the small time-varying input signal. This combination sets up the operating point and modulates the drain current (ID) that flows from the drain to the source. When a small AC signal is superimposed on the DC bias voltage at the gate, the instantaneous drain current comprises three...
520

You might also read

Related Articles

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

Sort by
Same author

[Daily practice of a FACT-team: results of an experience sampling study].

Tijdschrift voor psychiatrie·2022
Same author

Scaling theory of absorption in the frozen mode regime.

Optics letters·2021
Same author

*The efficacy of the attachment-based SAFE® prevention program: a randomized control trial including mothers and fathers.

Attachment & human development·2019
Same author

Assessing potential risks of treatment with long-term azithromycin in COPD patients: long-term oxygen users beware?

Irish journal of medical science·2015
Same author

Observation of asymmetric transport in structures with active nonlinearities.

Physical review letters·2014
Same author

Reconfigurable directional lasing modes in cavities with generalized PT symmetry.

Physical review letters·2014

Related Experiment Video

Updated: Jun 14, 2025

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

18.9K

Unidirectional amplification in the frozen mode regime enabled by a nonlinear defect.

S Landers, W Tuxbury, I Vitebskiy

    Optics Letters
    |August 29, 2024
    PubMed
    Summary

    Researchers developed a novel unidirectional amplifier using a frozen mode regime (FMR) and a nonlinear defect. This approach offers efficient light amplification with enhanced amplitude and vanishing group velocity, robust against impurities.

    More Related Videos

    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
    14:18

    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

    Published on: February 28, 2016

    11.4K
    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
    10:17

    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

    Published on: July 12, 2017

    11.5K

    Related Experiment Videos

    Last Updated: Jun 14, 2025

    Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
    11:08

    Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

    Published on: November 30, 2012

    18.9K
    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
    14:18

    Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

    Published on: February 28, 2016

    11.4K
    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
    10:17

    20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

    Published on: July 12, 2017

    11.5K

    Area of Science:

    • Physics
    • Photonics
    • Materials Science

    Background:

    • Stationary inflection points (SIPs) are spectral singularities in periodic structures, characterized by vanishing first and second derivatives of the Bloch dispersion relation.
    • SIPs lead to third-order exceptional point degeneracy, causing a collapse of Bloch modes and enabling efficient conversion of incident waves into a 'frozen mode' (FMR).
    • The frozen mode regime offers advantages over traditional cavity resonances for applications like light amplification due to its non-resonant nature.

    Purpose of the Study:

    • To propose a novel scheme for unidirectional amplifiers based on the frozen mode regime (FMR).
    • To leverage a tailored amplification/attenuation mechanism and a single nonlinear defect to achieve directional control.
    • To demonstrate the robustness of the proposed amplification mechanism.

    Main Methods:

    • Utilized a periodic structure with a stationary inflection point (SIP) to access the frozen mode regime (FMR).
    • Introduced a single nonlinear defect to break directional symmetry and induce nonlinearity-related unidirectional amplification/attenuation.
    • Investigated the amplification mechanism's performance and robustness against local impurities and parasitic nonlinearities.

    Main Results:

    • Successfully demonstrated a scheme for FMR-based unidirectional amplifiers.
    • The nonlinear defect enabled efficient, direction-dependent amplification near the SIP frequency.
    • The amplification mechanism showed robustness against local impurities and parasitic nonlinearities.

    Conclusions:

    • The proposed scheme offers a novel approach for creating unidirectional amplifiers leveraging the frozen mode regime.
    • The use of a single nonlinear defect provides an effective method for directional control and amplification.
    • The demonstrated robustness suggests practical applicability in various photonic devices.