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

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 structurally unique effector shared between vascular wilt fungi drives cotton and olive defoliation.

Nature communications·2026

Same author

Ferron-driven photoferroic hysteresis in van der Waals CuInP<sub>2</sub>S<sub>6</sub>.

Nature communications·2026

Same author

An in situ single-shot setup for strong-field terahertz pump-terahertz probe spectroscopy.

The Review of scientific instruments·2026

Same author

Efficacy of hc-tNGS for pathogen identification for pediatric cUTIs: a real-world observational study.

Frontiers in cellular and infection microbiology·2026

Same author

Anomalous collisionally induced transparency.

Physical review. E·2026

Same author

Novel Catabolic Pathway of Mesotrione and Its Metabolite AMBA by a Newly Mesotrione-Degrading Strain <i>Staphylococcus saprophyticus</i> B05.

Journal of agricultural and food chemistry·2026

Search research articles

Related Experiment Video

Updated: Sep 21, 2025

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Published on: July 8, 2013

Efficient multicycle terahertz pulse generation based on the tilted pulse-front technique.

Baolong Zhang, Xiaojun Wu, Xuan Wang

|June 1, 2022

Summary

This summary is machine-generated.

Researchers developed a new method to efficiently generate multicycle terahertz (THz) waves using an echelon in a single-cycle THz source. This breakthrough advances strong-field THz science and applications.

More Related Videos

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

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

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

Published on: July 12, 2017

Related Experiment Videos

Last Updated: Sep 21, 2025

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Published on: July 8, 2013

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

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

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

Published on: July 12, 2017

Area of Science:

Physics
Optics
Materials Science

Background:

Controlling terahertz (THz) wave oscillations is crucial for THz-based particle acceleration and nonlinear physics.
Current limitations in efficient, frequency-modulable multicycle THz sources hinder strong-field THz science.
Existing methods often lack efficiency or tunability for advanced applications.

Purpose of the Study:

To develop a novel, efficient method for generating multicycle THz pulses.
To enable precise engineering of THz wave properties for strong-field applications.
To overcome the limitations of current THz source technologies.

Main Methods:

Utilized optical rectification in lithium niobate crystals with a tilted pulse-front technique.
Incorporated a simple echelon structure into a single-cycle THz source.
Investigated the effect of echelon design on radiated THz properties.

Main Results:

Achieved efficient generation of multicycle THz pulses with 0.1% 800 nm-to-THz conversion efficiency at room temperature.
Demonstrated that echelon design allows for engineered THz properties.
Showcased high efficiency and ease of operation for the new THz generation method.

Conclusions:

The proposed method offers an efficient and versatile approach to multicycle THz generation.
This technique facilitates easy switching between single-cycle and multicycle THz modes.
The advancements are pivotal for the expansion of high-field THz radiation applications.