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

797
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...
797
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

810
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
810
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

1.9K
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.
1.9K
Two-Dimensional (2D) NMR: Overview01:12

Two-Dimensional (2D) NMR: Overview

1.6K
The 1D NMR spectrum of large and complex molecules like natural products has complicated splitting patterns and overlapping signals, which can be easily interpreted using 2-dimensional (2D) NMR. Unlike 1D NMR, 2D NMR has two frequency axes that provide the coupling information between the nucleus A and nucleus B in a molecule. The process from which 2D spectra are obtained has four steps.
The first step is the preparation period, during which nucleus A is excited with a radiofrequency pulse....
1.6K

You might also read

Related Articles

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

Sort by
Same author

Comparative machine learning approaches to prognosticate clinical outcomes in oral and maxillofacial space infections: a retrospective analysis.

BMC medical informatics and decision making·2026
Same author

A wireless battery-free intelligent system for in situ bacterial virulence detection and advanced wound therapy.

Biosensors & bioelectronics·2026
Same author

Porphyromonas gingivalis promotes oral squamous cell carcinoma progression via the IL-6/EZH2/Snai2 axis.

Scientific reports·2026
Same author

A Wireless, Battery-Free Artificial Throat Patch with Deep Learning for Emotional Speech Recognition.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Decapitation Rapidly Triggers Axillary Bud Release via Regulatory Network Reprogramming in <i>Nicotiana tabacum</i>.

Plants (Basel, Switzerland)·2025
Same author

Colonic Stricture as the Initial Manifestation of IgG4-Related Disease.

Digestive diseases and sciences·2025

Related Experiment Video

Updated: Feb 22, 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

9.8K

Dense electro-optic frequency comb generated by two-stage modulation for dual-comb spectroscopy.

Shuai Wang, Xinyu Fan, Bingxin Xu

    Optics Letters
    |September 29, 2017
    PubMed
    Summary
    This summary is machine-generated.

    A new method generates dense electro-optic frequency combs for agile spectroscopy. This technique enables precise molecular measurements using a hybrid dual-comb interferometer with high spectral resolution.

    More Related Videos

    Quasi-light Storage for Optical Data Packets
    07:45

    Quasi-light Storage for Optical Data Packets

    Published on: February 6, 2014

    11.4K
    Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
    09:57

    Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy

    Published on: July 25, 2022

    4.6K

    Related Experiment Videos

    Last Updated: Feb 22, 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

    9.8K
    Quasi-light Storage for Optical Data Packets
    07:45

    Quasi-light Storage for Optical Data Packets

    Published on: February 6, 2014

    11.4K
    Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
    09:57

    Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy

    Published on: July 25, 2022

    4.6K

    Area of Science:

    • Optics and Photonics
    • Spectroscopy
    • Quantum Electronics

    Background:

    • Electro-optic frequency combs offer frequency-agile spectroscopy without complex phase-locking.
    • Developing dense electro-optic frequency combs over broad spans remains a challenge.

    Purpose of the Study:

    • To propose a straightforward and efficient method for generating electro-optic frequency combs with small line spacing and a large span.
    • To demonstrate a hybrid dual-comb interferometer for high-resolution spectroscopy.

    Main Methods:

    • Employed a two-stage modulation technique to generate an 18 GHz line-spacing comb, followed by a 250 MHz line-spacing comb.
    • Generated an electro-optic frequency comb spanning 1500 lines.
    • Established a mutually coherent hybrid dual-comb interferometer using the generated comb and a free-running mode-locked laser.

    Main Results:

    • Successfully generated an electro-optic frequency comb with a 250 MHz line spacing and a broad span.
    • Demonstrated the hybrid dual-comb interferometer's capability for high-resolution spectral measurements.
    • Measured the absorption and dispersion profiles of the H13CN molecular transition with 250 MHz spectral resolution.

    Conclusions:

    • The proposed two-stage modulation method is efficient for generating dense electro-optic frequency combs.
    • The hybrid dual-comb interferometer provides a practical platform for high-resolution spectroscopy.
    • This approach advances frequency-agile comb-based spectroscopy for molecular analysis.