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

Feedback control systems01:26

Feedback control systems

727
Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
727
Feedback Inhibition00:46

Feedback Inhibition

57.2K
Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!
57.2K
Feedback Loops01:01

Feedback Loops

64.5K
In most cases, excessive hormone production is prevented by negative feedback—a loop that starts with a stimulus inducing the release of a particular substance, like a hormone, to maintain a certain level before triggering a signal that results in a decrease in further release of the hormone.
64.5K
Pulse01:16

Pulse

2.2K
When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical...
2.2K
Pulse01:05

Pulse

4.1K
The pulse is one of the most fundamental physiological indicators of the body's cardiovascular health. It is the rhythmic expansion and contraction of the arterial walls in response to the pressure generated by the heart's pumping action.
Pulse Rate and its Significance
Pulse rate, often measured in beats per minute (bpm), reflects the heart rate (HR), which is influenced by numerous factors such as stress, physical activity, and hormonal changes. A normal resting adult pulse rate falls...
4.1K
Effects of feedback01:24

Effects of feedback

1.0K
Feedback in control systems plays a critical role in shaping various operational parameters, extending beyond simple error reduction to influence stability, bandwidth, gain, impedance, and sensitivity. Understanding these effects requires examining a basic feedback system characterized by defined input, output, error, and feedback signals.
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
1.0K

You might also read

Related Articles

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

Sort by
Same author

Strongly resonant polarization dynamics of pulse trains in a spin-flip model for an excitable microlaser with delayed self-feedback.

The European physical journal. Special topics·2026
Same author

Time-Resolved Dynamics of Semiconductor Nanolaser via Four-Wave Mixing Gating.

ACS photonics·2026
Same author

Accurate Prediction of Optical Transitions in Epitaxial InGaAs/InAlAs Asymmetric Coupled Quantum-Well Structures.

ACS nanoscience Au·2026
Same author

Discrete Time Crystals in Actively Mode-Locked Lasers.

Physical review letters·2026
Same author

Experimentally characterising the dynamical landscape of an active MEMS cantilever.

Communications engineering·2025
Same author

Hybrid LiDAR-radar at 9 μm wavelength with unipolar quantum optoelectronic devices.

Nanophotonics (Berlin, Germany)·2025

Related Experiment Video

Updated: Feb 8, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.7K

Pulse train interaction and control in a microcavity laser with delayed optical feedback.

Soizic Terrien, Bernd Krauskopf, Neil G R Broderick

    Optics Letters
    |June 30, 2018
    PubMed
    Summary
    This summary is machine-generated.

    Short optical pulses control semiconductor laser dynamics, enabling triggering, erasing, and re-timing of regenerative pulse trains. Pulse interactions and complex dynamics are explained by carrier behavior and nonlinear delay differential equations.

    More Related Videos

    Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
    11:20

    Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses

    Published on: July 2, 2012

    15.5K
    A Vibrotactile Feedback Device for Seated Balance Assessment and Training
    09:13

    A Vibrotactile Feedback Device for Seated Balance Assessment and Training

    Published on: January 20, 2019

    6.9K

    Related Experiment Videos

    Last Updated: Feb 8, 2026

    Generation and Coherent Control of Pulsed Quantum Frequency Combs
    06:42

    Generation and Coherent Control of Pulsed Quantum Frequency Combs

    Published on: June 8, 2018

    9.7K
    Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
    11:20

    Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses

    Published on: July 2, 2012

    15.5K
    A Vibrotactile Feedback Device for Seated Balance Assessment and Training
    09:13

    A Vibrotactile Feedback Device for Seated Balance Assessment and Training

    Published on: January 20, 2019

    6.9K

    Area of Science:

    • Nonlinear optics
    • Semiconductor laser physics
    • Optoelectronics

    Background:

    • Semiconductor microcavity lasers with saturable absorbers and optical feedback exhibit complex dynamics.
    • Controlling pulse generation in these lasers is crucial for applications in optical communications and signal processing.

    Purpose of the Study:

    • To investigate the pulse train dynamics in an excitable semiconductor microcavity laser with delayed optical feedback.
    • To demonstrate the control of regenerative pulse trains using short optical pulses.
    • To analyze the interactions between pulses and the underlying carrier dynamics.

    Main Methods:

    • Experimental measurements of pulse train dynamics.
    • Theoretical modeling using nonlinear delay differential equations.
    • Bifurcation analysis of the model.

    Main Results:

    • Short optical control pulses can trigger, erase, and retime regenerative pulse trains.
    • Both repulsive and attractive interactions between pulses were observed and attributed to carrier dynamics.
    • Arbitrary sequences of coexisting pulse trains were found to be long transients towards stable, equidistant pulse solutions.

    Conclusions:

    • The study provides a comprehensive understanding of pulse train dynamics in semiconductor lasers with delayed feedback.
    • The findings highlight the potential for precise control of optical pulse generation using external optical triggers.
    • The results contribute to the fundamental knowledge of nonlinear dynamics in optoelectronic devices.