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

Interference and Diffraction02:18

Interference and Diffraction

Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.

You might also read

Related Articles

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

Sort by
Same author

Narrow linewidth III-V-on-SiN laser with extended frequency chirp capability based on micro-transfer printing for high resolution distributed acoustic sensing.

Optics express·2025
Same author

Generation of ultrahigh and tunable repetition rates in CW injection-seeded frequency-shifted feedback lasers.

Optics express·2013
Same author

Deep and optically resolved imaging through scattering media by space-reversed propagation.

Optics letters·2012
Same author

Acousto-optic laser optical feedback imaging.

Optics letters·2012
Same author

Coherent microscopy by laser optical feedback imaging (LOFI) technique.

Ultramicroscopy·2011
Same author

Measurement of the third-order susceptibility of glasses by EFISH of femtosecond pulses.

Optics express·2009

Related Experiment Video

Updated: Jun 24, 2026

Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

Lambda/2 fringe-spacing interferometer.

H Guillet de Chatellus1, J-P Pique

  • 1Laboratoire de Spectrométrie Physique UMR 5588 CNRS-Université Joseph Fourier, Saint Martin d'Hères, France. hguillet@spectro.ujf-grenoble.fr

Optics Letters
|March 14, 2009
PubMed
Summary

Researchers developed a novel two-beam interferometer that achieves half the fringe spacing of traditional devices. This innovation uses atomic fluorescence detection for enhanced precision in nanoscale measurements.

Area of Science:

  • Atomic physics
  • Optical interferometry
  • Laser spectroscopy

Background:

  • Interferometry precision is limited by fringe spacing, typically a laser wavelength.
  • Current methods lack the resolution for nanoscale measurements.

Purpose of the Study:

  • To present a novel two-beam interferometer with reduced fringe spacing.
  • To demonstrate enhanced precision for nanoscale displacement measurements.

Main Methods:

  • Developed a two-beam interferometer with a twofold degenerate atomic system.
  • Replaced direct beat signal detection with fluorescence monitoring.
  • Used hot sodium vapor excited by a D1 line broadband laser.

Main Results:

  • Achieved a fringe spacing reduced by a factor of 2 (lambda/2).

More Related Videos

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
13:31

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

Related Experiment Videos

Last Updated: Jun 24, 2026

Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
13:31

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

  • Demonstrated lambda/2 fringe spacing in the fluorescence signal.
  • Observed extremely narrow dark fringes in the saturation regime.

    • Conclusions:

    • The novel interferometer offers significantly improved precision.
    • Potential applications include nanoscale displacement measurements and atom localization.