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

Standing Waves in a Cavity01:28

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
Modes of Standing Waves - I01:03

Modes of Standing Waves - I

A close look at earthquakes provides evidence for the conditions appropriate for resonance, standing waves, and constructive and destructive interference. A building may vibrate for several seconds with a driving frequency matching the building's natural frequency of vibration; this produces a resonance that results in one building collapsing while the neighboring buildings do not. Often, buildings of a certain height are devastated, while other taller buildings remain intact. This phenomenon...
Modes of Standing Waves: II01:04

Modes of Standing Waves: II

The starting point for expressing the modes of standing waves is understanding the boundary conditions that the waves must follow. The boundary conditions are derived from the physical understanding of how the standing waves are sustained, that is, how the vibrating particles of the medium behave at the boundaries imposed on them.
For a tube open at one end and closed at the other filled with air, the modes are such that there is always an antinode at the open end and a node at the closed end.
Doppler Effect - II01:05

Doppler Effect - II

The Doppler effect has several practical, real-world applications. For instance, meteorologists use Doppler radars to interpret weather events based on the Doppler effect. Typically, a transmitter emits radio waves at a specific frequency toward the sky from a weather station. The radio waves bounce off the clouds and precipitation and travel back to the weather station. The radio frequency of the waves reflected back to the station appears to decrease if the clouds or precipitation are moving...
Dynamics of Circular Motion01:30

Dynamics of Circular Motion

An object undergoing circular motion, like a race car, is accelerating because it is changing the direction of its velocity. This centrally directed acceleration is called centripetal acceleration. This acceleration acts along the radius of the curved path (thus is also referred to as radial acceleration).
Any acceleration must be produced by some force. Therefore, any force or combination of forces can cause centripetal acceleration. A few examples include the tension in the rope on a...
Standing Waves01:17

Standing Waves

Sometimes waves do not seem to move; rather, they just vibrate in place. Unmoving waves can be seen on the surface of a glass of milk kept in a refrigerator, which is one example of standing waves. Vibrations from the refrigerator motor create waves on the milk that oscillate up and down but do not seem to move across the surface. These waves are formed or created by the superposition of two or more identical moving waves in opposite directions. The waves move through each other, with their...

You might also read

Related Articles

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

Sort by
Same author

Simulation modelling as a tool to guide control strategies for foot and mouth disease in an endemic country: Nusa Tenggara Barat, Indonesia 2023-2024.

Preventive veterinary medicine·2026
Same author

A phase II study of daily carboplatin plus irradiation followed by durvalumab therapy for older adults (≥75 years) with unresectable III non-small-cell lung cancer and performance status of 2: NEJ039A.

ESMO open·2024
Same author

Hepatobiliary and Pancreatic: Hepatic alveolar echinococcosis mimics cholangiocarcinoma: Role of EUS-FNA.

Journal of gastroenterology and hepatology·2018
Same author

Picosecond rotation of a ring-shaped optical lattice by using a chirped vortex-pulse pair.

Optics letters·2016
Same author

Expression of protein gene product 9.5 and Sal-like protein 4 in canine seminomas.

Journal of comparative pathology·2014
Same author

Immunohistochemical characterization of neuroendocrine differentiation of canine anal sac glandular tumours.

Journal of comparative pathology·2013

Related Experiment Video

Updated: Jun 10, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation
10:52

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

Dynamics of a paired optical vortex generated by second-harmonic generation.

Y Toda1, S Honda, R Morita

  • 1Department of Applied Physics, Hokkaido University, N13W8 Kita-ku, Sapporo, Japan. toda@eng.hokudai.ac.jp

Optics Express
|August 20, 2010
PubMed
Summary

We observed the rotation and splitting of paired optical vortices generated by second-harmonic generation. This phenomenon reveals the Gouy phase and crystal walk-off angle, offering insights into nonlinear optical dynamics.

More Related Videos

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

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

Related Experiment Videos

Last Updated: Jun 10, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation
10:52

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

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

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

Area of Science:

  • Nonlinear Optics
  • Quantum Optics
  • Laser Physics

Background:

  • Optical vortices (OVs) carry orbital angular momentum.
  • Second-harmonic generation (SHG) is a key nonlinear optical process.
  • Understanding OV dynamics in nonlinear media is crucial for optical technologies.

Purpose of the Study:

  • To investigate the dynamics of paired optical vortices generated via SHG.
  • To analyze the influence of nonlinear crystal position on OV behavior.
  • To elucidate the underlying physical mechanisms governing OV rotation and splitting.

Main Methods:

  • Generation of paired optical vortices using sub-picosecond pulses and a nonlinear crystal.
  • Systematic variation of the nonlinear crystal's position along the propagation axis.
  • Quantitative analysis of vortex rotation, separation distance, and beam profiles.

Main Results:

  • Observed rotation and changing separation distance of paired OVs with crystal translation.
  • Demonstrated that beam walk-off in SHG causes topological charge doubling and contamination by a zero-order Laguerre-Gaussian beam (LG(0)).
  • Correlated OV rotation angle with Gouy phase and vortex splitting with the crystal walk-off angle.

Conclusions:

  • The dynamics of paired OVs generated by SHG are governed by beam walk-off and Gouy phase shifts.
  • SHG provides a method to control OV properties and measure nonlinear crystal parameters.
  • Subtraction of the LG(0) beam can be achieved through specific phase manipulation in the pump beam.