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

Group Polarization01:01

Group Polarization

34.4K
Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
34.4K
Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

445
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
445
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

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

1.1K
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...
1.1K
Curvilinear Motion: Polar Coordinates01:27

Curvilinear Motion: Polar Coordinates

411
In polar coordinates, the motion of a particle follows a curvilinear path. The radial coordinate symbolized as 'r,' extends outward from a fixed origin to the particle, while the angular coordinate, 'θ,' measured in radians, represents the counterclockwise angle between a fixed reference line and the radial line connecting the origin to the particle.
The particle's location is described using a unit vector along the radial direction. Deriving the particle's position...
411
Conservation of Angular Momentum: Application01:18

Conservation of Angular Momentum: Application

11.3K
A system's total angular momentum remains constant if the net external torque acting on the system is zero. Examples of such systems include a freely spinning bicycle tire that slows over time due to torque arising from friction, or the slowing of Earth's rotation over millions of years due to frictional forces exerted on tidal deformations. However in the absence of a net external torque, the angular momentum remains conserved. The conservation of angular momentum principle requires a...
11.3K
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)01:15

Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

427
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT) is an advanced Nuclear Magnetic Resonance (NMR) technique specifically designed to detect and enhance the signals of low-abundance nuclei, such as carbon-13 and nitrogen-15, in small molecules. The fundamental principle behind INEPT is the transfer of polarization from a more abundant and highly polarizable nucleus, typically hydrogen-1, to the low-abundance nucleus of interest. This process effectively boosts the NMR signal of the...
427

You might also read

Related Articles

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

Sort by
Same author

Filamentation-assisted isolated attosecond pulse generation.

Nature communications·2026
Same author

Spin to orbital angular momentum transfer in frequency up-conversion.

Nanophotonics (Berlin, Germany)·2024
Same author

Chiral topological light for detection of robust enantiosensitive observables.

Nature photonics·2024
Same author

Circularly Polarized High-Harmonic Beams Carrying Self-Torque or Time-Dependent Orbital Angular Momentum.

ACS photonics·2024
Same author

Topological phase transitions via attosecond x-ray absorption spectroscopy.

Reports on progress in physics. Physical Society (Great Britain)·2024
Same author

Isolated attosecond pulse generation in a semi-infinite gas cell driven by time-gated phase matching.

Light, science & applications·2024

Related Experiment Video

Updated: Aug 5, 2025

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

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

Published on: September 5, 2019

8.5K

Nonlinear up-conversion of a polarization Möbius strip with half-integer optical angular momentum.

Martin Luttmann1, Mekha Vimal1, Matthieu Guer1,2

  • 1Université Paris-Saclay, CEA, CNRS, LIDYL, Gif-sur-Yvette 91191, France.

Science Advances
|March 24, 2023
PubMed
Summary

Generalized angular momentum (GAM) is shown to be a valid quantum number for light fields with nontrivial topology. This study demonstrates linear scaling of GAM with harmonic order in high harmonic generation, enabling finer control of light beams.

More Related Videos

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
14:18

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Published on: February 28, 2016

11.5K
Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

7.2K

Related Experiment Videos

Last Updated: Aug 5, 2025

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

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

Published on: September 5, 2019

8.5K
Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
14:18

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

Published on: February 28, 2016

11.5K
Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

7.2K

Area of Science:

  • Nonlinear optics
  • Quantum optics
  • Topological photonics

Background:

  • Symmetries and conservation laws are fundamental in nonlinear optics.
  • Paraxial light fields with nontrivial topology are of recent interest.
  • These fields are eigenstates of generalized angular momentum (GAM), not orbital (OAM) or spin angular momentum (SAM).

Purpose of the Study:

  • To investigate the role of GAM in high harmonic generation (HHG).
  • To demonstrate the linear scaling of GAM with harmonic order.
  • To establish GAM as a relevant quantum number for specific light fields.

Main Methods:

  • Driving HHG with a polarization Möbius strip.
  • Using a half-integer GAM charge.
  • Implementing angular momentum characterization in the extreme ultraviolet (XUV) range.

Main Results:

  • Demonstrated linear scaling of GAM with harmonic order.
  • Confirmed each harmonic carries a precise half-integer GAM charge.
  • Showcased GAM as an appropriate quantum number beyond SAM and OAM.

Conclusions:

  • GAM is a crucial quantum number for light fields with fractional polarization singularities.
  • This finding enables finer manipulation and application of such light beams.
  • Highlights the importance of GAM in understanding topological light fields.