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

1.7K
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:
1.7K

You might also read

Related Articles

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

Sort by
Same author

Unplanned placement changes in children's homes: an observational study of national administrative data on children in care and providers in England.

BMJ public health·2026
Same author

Monolithic manufacturing of an electrically addressable quasi-suspended nanophotonic aperture.

Nature nanotechnology·2026
Same author

Spin-photon qubits for scalable quantum network.

Light, science & applications·2026
Same author

Microstructural disease and hypoperfusion in dilated cardiomyopathy underpin midwall septal fibrosis.

Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance·2026
Same author

Mechanical characterization of Bi-2212 composite winding pack samples for high-field superconducting magnet design.

Superconductor science & technology·2026
Same author

Incidental findings and duty-of-care protocols in cardiovascular magnetic resonance among older adults: a prospective population-based study from MyoFit46.

The lancet. Healthy longevity·2026

Related Experiment Video

Updated: May 4, 2026

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
09:10

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Published on: April 24, 2014

27.9K

Scalable single-mode surface-emitting laser via open-Dirac singularities.

Rushin Contractor1, Wanwoo Noh1, Walid Redjem1

  • 1Department of Electrical Engineering and Computer Sciences, University of California Berkeley, Berkeley, CA, USA.

Nature
|June 29, 2022
PubMed
Summary
This summary is machine-generated.

Researchers developed new open-Dirac electromagnetic cavities for lasers that maintain single-mode operation regardless of cavity size. This breakthrough overcomes a long-standing challenge in laser technology, enabling scalable single-mode lasers.

More Related Videos

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
09:33

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

6.4K
Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
08:48

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

7.7K

Related Experiment Videos

Last Updated: May 4, 2026

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics
09:10

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Published on: April 24, 2014

27.9K
Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
09:33

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

6.4K
Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
08:48

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

Published on: November 22, 2019

7.7K

Area of Science:

  • Photonics and Laser Technology
  • Electromagnetism and Optics
  • Condensed Matter Physics

Background:

  • Single-aperture cavities are crucial for single-mode laser operation but face challenges with multimode emission as cavity size increases.
  • Scaling up laser cavities while maintaining single-mode output has been a persistent problem for six decades.
  • A scale-invariant laser mechanism, enabling single-mode lasing irrespective of cavity size, has remained elusive.

Purpose of the Study:

  • To propose and experimentally demonstrate a novel cavity design for achieving scale-invariant single-mode lasing.
  • To investigate the underlying physical mechanisms responsible for maintaining single-mode operation in larger cavities.
  • To introduce and characterize a new class of lasers, termed Berkeley surface-emitting lasers (BerkSELs).

Main Methods:

  • Utilizing open-Dirac electromagnetic cavities realized by truncated hexagonal photonic crystals.
  • Analyzing the unconventional scaling of losses in reciprocal space within these cavities.
  • Investigating the convergence of the complex free spectral range and its relation to Bloch band loss rates.
  • Characterizing the emergent flat-envelope fundamental mode and its phase-locking properties.

Main Results:

  • Demonstrated single-mode lasing that is maintained as cavity size is scaled up.
  • Observed unconventional loss scaling in reciprocal space, preventing multimode emission.
  • Identified the convergence of the complex free spectral range to a constant governed by Bloch band loss rates.
  • Confirmed that the far-field emission pattern corresponds to a topological singularity of charge two.

Conclusions:

  • Open-Dirac cavities provide a viable mechanism for achieving scale-invariant single-mode lasing, overcoming previous limitations.
  • The unique loss scaling and mode-locking properties of these cavities enable robust single-mode operation across different sizes.
  • Berkeley surface-emitting lasers (BerkSELs) represent a significant advancement with potential applications in light-matter interaction and cavity quantum electrodynamics.