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

Properties of Fourier Transform II01:24

Properties of Fourier Transform II

814
The Fourier Transform (FT) is an essential mathematical tool in signal processing, transforming a time-domain signal into its frequency-domain representation. This transformation elucidates the relationship between time and frequency domains through several properties, each revealing unique aspects of signal behavior.
The Frequency Shifting property of Fourier Transforms highlights that a shift in the frequency domain corresponds to a phase shift in the time domain. Mathematically, if x(t) has...
814
Properties of Fourier Transform I01:21

Properties of Fourier Transform I

705
The application of Fourier Transform properties in radio broadcasting is multifaceted, enabling significant advancements in the way signals are transmitted and received. Key areas where these properties are utilized include simultaneous multi-channel transmission, audio clip speed adjustments, live broadcast delays for different time zones, audio frequency adjustments, and signal demodulation.
In radio broadcasting, multiple audio signals often need to be transmitted simultaneously. The Fourier...
705
Time and frequency -Domain Interpretation of PI Control01:27

Time and frequency -Domain Interpretation of PI Control

444
Proportional-Integral (PI) controllers are essential in many control systems to improve stability and performance. They are commonly used in everyday devices like thermostats to enhance system damping and reduce steady-state error. When the zero in the controller's transfer function is optimally placed, the system benefits significantly in terms of stability and accuracy.
Acting as a low-pass filter, the PI controller slows the system's response and extends settling times. This requires...
444
Dual Nature of Electromagnetic (EM) Radiation01:10

Dual Nature of Electromagnetic (EM) Radiation

4.3K
Electromagnetic (EM) radiation consists of electric and magnetic field components oscillating in planes perpendicular to each other and mutually perpendicular to radiation propagation through space. EM radiation can be classified as a wave, characterized by the properties of waves such as wavelength (denoted as λ) and frequency (represented by ν).
Wavelength is the distance between two consecutive peaks (the highest point) or troughs (the lowest point) in the wave. Frequency is the number of...
4.3K
Photoelectric Effect02:26

Photoelectric Effect

40.3K
When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...
40.3K
UV–Vis Spectroscopy: Molecular Electronic Transitions01:16

UV–Vis Spectroscopy: Molecular Electronic Transitions

3.1K
In Ultraviolet–Visible (UV–Vis) spectroscopy, the absorption of electromagnetic radiation is used to probe the electronic structure of molecules. This technique provides insights into molecular electronic transitions, particularly the movement of electrons between different molecular orbitals. Radiation is absorbed if the energy of the electromagnetic radiation passing through the molecule is precisely equal to the energy difference between the excited and ground states. During this...
3.1K

You might also read

Related Articles

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

Sort by
Same author

Erratum: "Highly versatile, two-color setup for high-order harmonic generation using spatial light modulators" [Rev. Sci. Instrum. 95, 073002 (2024)].

The Review of scientific instruments·2026
Same author

Isolation, characterization and evaluation of growth kinetics and multilineage differentiation of ovine ovarian mesenchymal stem cells.

Theriogenology·2026
Same author

Identification of the roaming mechanism and the formation of H<sub>3</sub><sup>+</sup> in core ionised cyclopropane.

Physical chemistry chemical physics : PCCP·2026
Same author

The time-resolved luminescence end station for studies of ultrafast relaxation processes under pulsed femtosecond X-rays at the FemtoMAX beamline.

The Review of scientific instruments·2025
Same author

XUV yield optimization of two-color high-order harmonic generation in gases.

Nanophotonics (Berlin, Germany)·2025
Same author

Entanglement in photoionisation reveals the effect of ionic coupling in attosecond time delays.

Nature communications·2025

Related Experiment Video

Updated: Feb 19, 2026

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F&#8722;
06:53

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−

Published on: July 27, 2018

9.2K

Photoionization in the time and frequency domain.

M Isinger1, R J Squibb2, D Busto3

  • 1Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden. marcus.isinger@fysik.lth.se.

Science (New York, N.Y.)
|November 4, 2017
PubMed
Summary
This summary is machine-generated.

Attosecond light pulses probe ultrafast electron emission. This study resolves photoionization time delays in neon atoms, achieving excellent agreement with theoretical calculations and solving a long-standing experimental puzzle.

More Related Videos

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
06:08

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera

Published on: December 27, 2018

9.5K
Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy
10:03

Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy

Published on: June 27, 2014

18.4K

Related Experiment Videos

Last Updated: Feb 19, 2026

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F&#8722;
06:53

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−

Published on: July 27, 2018

9.2K
Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
06:08

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera

Published on: December 27, 2018

9.5K
Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy
10:03

Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy

Published on: June 27, 2014

18.4K

Area of Science:

  • Quantum mechanics
  • Attosecond physics
  • Atomic spectroscopy

Background:

  • Ultrafast processes, like electron emission, are studied using attosecond (10^-18 s) extreme ultraviolet light pulses.
  • Short pulse durations limit spectral resolution, complicating interpretation and comparison with theory.

Purpose of the Study:

  • To determine photoionization time delays in neon atoms with high temporal and spectral resolution.
  • To resolve discrepancies between experimental results and theoretical calculations in atomic photoionization.

Main Methods:

  • An interferometric technique was employed to combine high temporal and spectral resolution.
  • Photoionization time delays were measured across a 40-electron volt energy range in neon atoms.

Main Results:

  • Direct ionization and ionization with shake-up were spectrally disentangled.
  • Excellent agreement was achieved between experimental measurements and theoretical calculations.

Conclusions:

  • The study successfully determined photoionization time delays in neon, resolving a 7-year-old puzzle.
  • The findings validate theoretical models and enhance the understanding of ultrafast electron dynamics in atoms.