Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Reconstruction of Signal using Interpolation

Reconstruction of Signal using Interpolation

Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next sampling...

Time and frequency -Domain Interpretation of Phase-lead Control

Time and frequency -Domain Interpretation of Phase-lead Control

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...

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...

¹H NMR: Interpreting Distorted and Overlapping Signals

¹H NMR: Interpreting Distorted and Overlapping Signals

Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are slanted or...

Double Resonance Techniques: Overview

Double Resonance Techniques: Overview

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...

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.

You might also read

Related Articles

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

Sort by

Same author

A narrative review of the benefits of RIS/PACS and its integration into the radiology departments of low and middle-income countries.

Radiography (London, England : 1995)·2025

Same author

Response to the letter to the editor: "Differential diagnosis of pulmonary artery obstructions".

Clinical imaging·2025

Same author

Chronic thromboembolic pulmonary hypertension: Role of imaging in diagnosis and guiding the treatment.

Clinical imaging·2025

Same author

Research active medical imaging professionals in Australian metropolitan health services embrace opportunities and can overcome obstacles to engage in research: A mixed methods study.

Radiography (London, England : 1995)·2024

Same author

Hyperbaric oxygen therapy enables pain reduction and healing in painful chronic wounds, including in calciphylaxis.

Annales de dermatologie et de venereologie·2024

Same author

Intensity noise in difference frequency generation-based tunable femtosecond MIR sources.

Optics express·2023

Search research articles

Related Experiment Video

Updated: Jun 22, 2026

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

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

Published on: January 28, 2019

Third-order spectral phase compensation in parabolic pulse compression.

Y Zaouter, D N Papadopoulos, M Hanna

|June 24, 2009

Summary

A novel hybrid pulse compressor using prisms and gratings efficiently compensates for third-order dispersion. This system significantly enhances the temporal Strehl ratio for amplified parabolic pulses, improving laser performance.

More Related Videos

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Related Experiment Videos

Last Updated: Jun 22, 2026

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

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

Published on: January 28, 2019

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Area of Science:

Optics and Photonics
Laser Physics
Nonlinear Optics

Background:

High-power fiber amplifiers generate parabolic pulses with significant third-order dispersion.
Conventional grating compressors struggle with efficient third-order dispersion compensation.
Scaling laser energy and bandwidth exacerbates dispersion challenges.

Purpose of the Study:

To develop and evaluate a hybrid pulse compressor for amplified parabolic pulses.
To demonstrate efficient third-order spectral phase compensation.
To improve the temporal quality of ultrashort laser pulses.

Main Methods:

A hybrid compressor system combining prisms and gratings was designed.
Spectral phase measurements were performed to analyze dispersion compensation.
The temporal Strehl ratio was measured using conventional and hybrid compressors.

Main Results:

The hybrid compressor efficiently compensated for third-order spectral phase.
The temporal Strehl ratio improved from 0.67 to 0.96.
The system demonstrated superior performance compared to traditional grating compressors.

Conclusions:

Prism-grating compressors offer a simple and effective solution for third-order dispersion.
This technology is crucial for advancing high-energy, broad-bandwidth parabolic fiber amplifiers.
The enhanced temporal quality is vital for various laser applications.