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.
Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
X-ray Crystallography02:18

X-ray Crystallography

The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
Interference: Path Lengths01:10

Interference: Path Lengths

Consider two sources of sound, that may or may not be in phase, emitting waves at a single frequency, and consider the frequencies to be the same.
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...
IR Spectrometers01:25

IR Spectrometers

There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...

You might also read

Related Articles

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

Sort by
Same author

Endocytic motif on HIV-1 Env regulates cleavage status and antibody neutralization of cell-free and cell-to-cell infection.

Journal of virology·2026
Same author

Corrosion Inhibition of Imidazolidinyl Urea-Based Zinc Anode Stabilization for Achieving Superbly Reversible Aqueous Zinc Metal Batteries.

Langmuir : the ACS journal of surfaces and colloids·2026
Same author

Hmgcs1 regulates cholesterol synthesis and promotes nerve fiber repair after spinal cord injury.

iScience·2026
Same author

Butyrate protects against Klebsiella pneumoniae-induced oxidative stress in alveolar macrophages via p62-Keap1-Nrf2 pathway.

Redox biology·2026
Same author

How should we interpret the use of vonoprazan and proton pump inhibitors during immunotherapy for hepatocellular carcinoma?

International journal of clinical oncology·2026
Same author

Systematic review and first meta-analysis of the efficacy and safety of gemcitabine-cisplatin combined with paclitaxel in patients with advanced biliary tract cancer.

European journal of clinical pharmacology·2026
Same journal

Gaussian-modulated continuous-variable quantum key distribution over 60 km fiber using an integrated silicon photonic receiver.

Optics letters·2026
Same journal

E2E-OCT: end-to-end joint learning model using optical coherence tomography images for vocal cord leukoplakia diagnosis.

Optics letters·2026
Same journal

Holographic generation of panoramic 3D scenes by concave ellipsoidal mirror reflection.

Optics letters·2026
Same journal

Dual-pilot phase recovery with pair-wise maximum-ratio combining for coherent PONs.

Optics letters·2026
Same journal

Mapping the whispering gallery modes of a CaF<sub>2</sub> disk resonator with half-tapered fibers to estimate the fundamental mode volume.

Optics letters·2026
Same journal

Quantitative estimation of deep-subwavelength scale via dark-field scattering axial energy concentration decay profiles.

Optics letters·2026
See all related articles

Related Experiment Video

Updated: May 18, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
10:39

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

Circular common-path point diffraction interferometer.

Yongzhao Du1, Guoying Feng, Hongru Li

  • 1College of Electronic Information, Sichuan University, Chengdu, Sichuan 610064, China.

Optics Letters
|October 3, 2012
PubMed
Summary
This summary is machine-generated.

A novel point-diffraction interferometer offers a compact, vibration-insensitive design for measuring dynamic processes. Its common-path geometry simplifies alignment and enhances stability for optical testing.

More Related Videos

Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

A Multimodal Wide-Field Fourier-Transform Raman Microscope
06:48

A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

Related Experiment Videos

Last Updated: May 18, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
10:39

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

A Multimodal Wide-Field Fourier-Transform Raman Microscope
06:48

A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

Area of Science:

  • Optical Engineering
  • Interferometry
  • Metrology

Background:

  • Traditional interferometers can be complex and sensitive to environmental disturbances.
  • Accurate measurement of dynamic processes requires stable and compact optical systems.
  • Point-diffraction interferometry (PDI) offers a simplified approach to interference.

Purpose of the Study:

  • To develop a simple, compact, and robust point-diffraction interferometer.
  • To enable precise measurements of moving objects and dynamic optical phenomena.
  • To create a vibration-insensitive interferometric system with common-path geometry.

Main Methods:

  • A circular common-path geometry was implemented using a beam-splitter and two mirrors.
  • A telescope system with two lenses focused the optical paths.
  • An opaque mask with a reference pinhole and object holder was used in the focal plane.

Main Results:

  • The signal and reference waves traveled along the same path, enhancing stability.
  • The interferometer demonstrated compactness and insensitivity to vibrations.
  • The design is suitable for imaging interference patterns of dynamic processes onto a CCD.

Conclusions:

  • The developed point-diffraction interferometer is a simple, compact, and effective tool for optical metrology.
  • Its common-path design significantly improves vibration insensitivity.
  • The system is well-suited for real-time measurement of dynamic events and moving objects.