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

Time and frequency -Domain Interpretation of Phase-lag Control01:21

Time and frequency -Domain Interpretation of Phase-lag Control

87
Phase-lag controllers are widely used in control systems to improve stability and reduce steady-state errors. A dimmer switch controlling the brightness of a light bulb serves as a practical example of phase-lag control, gradually adjusting the bulb's brightness. Mathematically, phase-lag control or low-pass filtering is represented when the factor 'a' is less than 1.
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any...
87
Time and frequency -Domain Interpretation of Phase-lead Control01:24

Time and frequency -Domain Interpretation of Phase-lead Control

80
Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
80

You might also read

Related Articles

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

Sort by
Same author

Identification of TXNIP, FTCD, and HAGH as Key Genes in a Cancer Stem Cell-Driven Prognostic Model for Hepatocellular Carcinoma.

Endocrine, metabolic & immune disorders drug targets·2026
Same author

Edge-Bound Doping Effect in Oxidation-Etched CVD MoS<sub>2</sub>.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Nanosecond-latency all-optical fiber sensing with in-sensor computing.

Light, science & applications·2026
Same author

Effective recycling of spent lithium-ion batteries via radiolytic radical reactions.

Nature communications·2026
Same author

Reconfigurable silicon photonic transceiver for WDM BPSK non-coherent detection.

Optics express·2026
Same author

Molecular detection of Clostridium and Bacillus species in foods: recent advances and applications.

Food research international (Ottawa, Ont.)·2026
Same journal

Denoising algorithm of Φ-OTDR systems based on adaptive fractional wavelet transform denoising.

Optics express·2026
Same journal

Millisecond photon-to-photon latency and high-speed volumetric projection system for optogenetics.

Optics express·2026
Same journal

Polarization-encoded coaxial structured light for high-precision 3D surface profilometry.

Optics express·2026
Same journal

Discrete freeform optical design based on collaborative optimization of point cloud and local normals.

Optics express·2026
Same journal

Ultrafast ghost imaging with 25 GHz speckle switching and wavelength-division multiplexing.

Optics express·2026
Same journal

Atomic vapor cells fabricated by femtosecond laser welding of standard-optical-quality glass.

Optics express·2026
See all related articles

Related Experiment Video

Updated: Jun 16, 2025

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

9.8K

Optical pulse processor based on achromatic time lens assisted by compound phase modulation.

Huabei Liu, Qijie Xie, Chunyang Ma

    Optics Express
    |June 14, 2025
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed a novel achromatic time lens to expand temporal aperture for ultrafast optical processing. This new system overcomes limitations of traditional methods, enabling perfect Fourier transforms with broader applications in quantum optics.

    More Related Videos

    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
    09:43

    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

    Published on: March 20, 2017

    9.8K
    Direct Imaging of Laser-driven Ultrafast Molecular Rotation
    10:52

    Direct Imaging of Laser-driven Ultrafast Molecular Rotation

    Published on: February 4, 2017

    9.7K

    Related Experiment Videos

    Last Updated: Jun 16, 2025

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
    08:39

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

    Published on: January 28, 2019

    9.8K
    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
    09:43

    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

    Published on: March 20, 2017

    9.8K
    Direct Imaging of Laser-driven Ultrafast Molecular Rotation
    10:52

    Direct Imaging of Laser-driven Ultrafast Molecular Rotation

    Published on: February 4, 2017

    9.7K

    Area of Science:

    • Optics and Photonics
    • Quantum Optics
    • Ultrafast Optical Processing

    Background:

    • Time-lens systems traditionally use sinusoidal waveforms for phase modulation, limiting linear chirp duration and temporal aperture.
    • This restriction hinders perfect Fourier transform capabilities in ultrafast optical processing.

    Purpose of the Study:

    • To propose and demonstrate a novel achromatic time lens system.
    • To expand the temporal aperture for enhanced optical pulse processing.

    Main Methods:

    • Utilized compound phase modulation with a weighted combination of fundamental and second harmonics.
    • Employed a two-stage process: initial pulse compression followed by chirp introduction using the compound waveform.
    • Validated through numerical simulations and experimental processing of Gaussian pulses.

    Main Results:

    • Achieved sustained linear chirp over extended pulse durations, significantly expanding the effective temporal aperture.
    • Experimentally demonstrated distortion-free processing of Gaussian pulses.
    • Compressed pulse width from 34 ps to 2.2 ps and broadened spectral bandwidth from 0.32 nm to 1.6 nm, maintaining waveform and spectral envelope.

    Conclusions:

    • The novel achromatic time lens effectively expands temporal aperture and supports perfect Fourier transforms.
    • The system demonstrates potential for on-chip integration in ultrafast optical pulse processing applications.
    • Maintains pulse shape and spectral characteristics during processing.