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

Propagation of Waves01:07

Propagation of Waves

2.3K
When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
2.3K
Lagging Strand Synthesis01:59

Lagging Strand Synthesis

12.9K
12.9K
¹H NMR: Long-Range Coupling01:27

¹H NMR: Long-Range Coupling

1.6K
The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene...
1.6K
¹H NMR: Interpreting Distorted and Overlapping Signals01:02

¹H NMR: Interpreting Distorted and Overlapping Signals

989
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
989
Propagation Speed of Electromagnetic Waves01:30

Propagation Speed of Electromagnetic Waves

3.3K
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
3.3K
Stereoisomerism02:52

Stereoisomerism

11.7K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
11.7K

You might also read

Related Articles

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

Sort by
Same author

Optically programable quasi phase matching in four-wave mixing.

Nature communications·2025
Same author

Pseudo-spin light circuits in nonlinear photonic crystals.

Nature communications·2025
Same author

Direct generation of spatially entangled qudits using quantum nonlinear optical holography.

Science advances·2023
Same author

Quantum sensing of strongly coupled light-matter systems using free electrons.

Science advances·2023
Same author

Cylindrical Metalens for Generation and Focusing of Free-Electron Radiation.

Nano letters·2022
Same author

Shaping of Electron Beams Using Sculpted Thin Films.

ACS photonics·2021
Same journal

Bi-layer photonic random meta-composite for cryogenic thermal control by ultra-broadband scattering matched reflectance.

Light, science & applications·2026
Same journal

Interferometric scattering for optical tomoslicing of transparent solids.

Light, science & applications·2026
Same journal

Multi-dimensional spatial-temporal projection ultrafast compressed imaging.

Light, science & applications·2026
Same journal

Expanded field of view light-field extended-reality displays with metalens array.

Light, science & applications·2026
Same journal

Experimental observation of counter-intuitive features of photonic bunching.

Light, science & applications·2026
Same journal

High-speed and high-sensitivity multi-gas detection based on parallel heterodyne LITES sensor.

Light, science & applications·2026
See all related articles

Related Experiment Video

Updated: May 25, 2025

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

8.9K

Coherence synthesis in nonlinear optics.

Zihao Pang1, Ady Arie2

  • 1School of Electrical Engineering, Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv, 69978, Israel. its.zihaopang@gmail.com.

Light, Science & Applications
|February 25, 2025
PubMed
Summary
This summary is machine-generated.

This study demonstrates customizing optical spatial coherence in nonlinear frequency conversion. Researchers synthesized incoherent vortex and Airy beams, enabling infrared to visible light imaging and verifying orbital angular momentum conservation.

More Related Videos

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

14.4K
Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

18.8K

Related Experiment Videos

Last Updated: May 25, 2025

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

8.9K
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

14.4K
Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

18.8K

Area of Science:

  • Nonlinear Optics
  • Quantum Optics
  • Photonics

Background:

  • Nonlinear frequency conversion typically requires high-coherence lasers, limiting understanding of coherence in nonlinear interactions.
  • The role of incoherence in nonlinear optical processes has been largely overlooked.
  • Exploring coherence in nonlinear phenomena can expand fundamental knowledge and applications.

Purpose of the Study:

  • To investigate the synthesis of optical spatial coherence in second harmonic generation (SHG).
  • To demonstrate a method for customizing second harmonic coherence using low-coherence sources.
  • To explore applications in imaging and structured light generation.

Main Methods:

  • Utilizing quadratic nonlinear photonic crystals for second harmonic generation.
  • Employing quantitative phase retrieval and a complex square-root filter on fundamental frequency speckles.
  • Experimentally generating incoherent vortex and Airy beams via nonlinear frequency conversion.

Main Results:

  • Successfully customized second harmonic coherence from fundamental frequency speckles.
  • Demonstrated incoherent imaging, converting an infrared smiley face to visible light.
  • Produced incoherent vortex beams and experimentally verified orbital angular momentum conservation for low-coherence sources.
  • Generated incoherent Airy beams that retain self-acceleration properties.

Conclusions:

  • Optical spatial coherence can be synthesized in nonlinear frequency conversion, challenging traditional assumptions.
  • The developed method allows for tailored coherence properties in generated light.
  • Findings open new avenues for applications in infrared imaging, fluorescence microscopy, and structured light generation with low-coherence sources.