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

IR Spectrometers01:25

IR Spectrometers

3.2K
There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
3.2K
Tandem Mass Spectrometry01:21

Tandem Mass Spectrometry

2.8K
Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
2.8K
Mass Analyzers: Overview01:13

Mass Analyzers: Overview

1.9K
The mass analyzer is a crucial component of the mass spectrometer. In the ionization chamber, the vaporized sample is bombarded with a high-energy electron beam to generate a radical cation and further fragment into neutral molecules, radicals, and cations. A series of negatively charged accelerator plates accelerate the cations into the mass analyzer. The mass analyzer separates ions according to their mass-to-charge (m/z) ratios and then directs them to the detector. The common types of mass...
1.9K
NMR Spectrometers: Resolution and Error Correction01:14

NMR Spectrometers: Resolution and Error Correction

1.1K
When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...
1.1K
UV–Vis Spectrometers01:14

UV–Vis Spectrometers

4.2K
The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.
4.2K
Atomic Absorption Spectroscopy: Instrumentation01:22

Atomic Absorption Spectroscopy: Instrumentation

1.9K
An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
The atomizer used in AAS can be either a flame atomizer or an...
1.9K

You might also read

Related Articles

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

Sort by
Same author

Measurement of the <sup>27</sup>Al<sup>+</sup> and <sup>87</sup>Sr absolute optical frequencies.

Metrologia·2026
Same author

Phase-Dependent Squeezing in Dual-Comb Interferometry.

Physical review letters·2026
Same author

Cavity-enhanced UV combs generated by sum frequency mixing with near-IR chirped-pulse electro-optic combs for Rb atom sensing at 323 nm.

Optics letters·2026
Same author

Frequency-comb-calibrated Laser Heterodyne Radiometry for Precision Radial Velocity Measurements.

The Astrophysical journal. Supplement series·2025
Same author

Mid-infrared hyperspectral microscopy with broadband 1-GHz dual frequency combs.

APL photonics·2025
Same author

Dynamic spectral tailoring of a 10 GHz laser frequency comb for enhanced calibration of astronomical spectrographs.

Optics express·2025
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: Mar 9, 2026

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
15:25

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Published on: February 4, 2018

6.6K

Tunable resolution terahertz dual frequency comb spectrometer.

Francisco S Vieira, Flavio C Cruz, David F Plusquellic

    Optics Express
    |January 7, 2017
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed a new method to enhance terahertz dual frequency comb spectroscopy (THz-DFCS) resolution. This technique adaptively modifies the laser repetition rate, significantly improving spectral resolution for THz-DFCS systems.

    More Related Videos

    High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
    10:40

    High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

    Published on: June 28, 2016

    8.0K
    A Multimodal Wide-Field Fourier-Transform Raman Microscope
    06:48

    A Multimodal Wide-Field Fourier-Transform Raman Microscope

    Published on: December 30, 2025

    618

    Related Experiment Videos

    Last Updated: Mar 9, 2026

    Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
    15:25

    Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

    Published on: February 4, 2018

    6.6K
    High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
    10:40

    High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy

    Published on: June 28, 2016

    8.0K
    A Multimodal Wide-Field Fourier-Transform Raman Microscope
    06:48

    A Multimodal Wide-Field Fourier-Transform Raman Microscope

    Published on: December 30, 2025

    618

    Area of Science:

    • Spectroscopy
    • Optoelectronics
    • Quantum Optics

    Background:

    • Terahertz dual frequency comb spectroscopy (THz-DFCS) offers high spectral resolution and broad bandwidth.
    • Current THz-DFCS resolution is typically limited by the laser repetition rate, ranging from 80 MHz to 1 GHz.

    Purpose of the Study:

    • To introduce a novel method for achieving sub-repetition rate resolution in THz-DFCS.
    • To enhance the spectral resolution of THz-DFCS without sacrificing bandwidth or output power.

    Main Methods:

    • Utilized integrated Mach-Zehnder electro-optic modulators (MZ-EOMs) to adaptively modify the effective laser repetition rate.
    • Demonstrated the application of this method to a terahertz frequency comb system.

    Main Results:

    • Achieved a resolution improvement of at least 20x, reducing the resolution from 100 MHz down to 5 MHz.
    • Maintained average output power and largely preserved the bandwidth of the terahertz comb.
    • Showcased the adaptability of the technique across the terahertz spectrum.

    Conclusions:

    • The developed method significantly enhances the spectral resolution of THz-DFCS.
    • This approach offers a substantial and easily implementable improvement for existing THz-DFCS systems.
    • The technique holds promise for advancing various applications relying on high-resolution terahertz spectroscopy.