Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

$Interference and Diffraction$ 02:18

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 Microscopy

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...

IR Spectrometers

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

PFASs contamination in groundwater of a chemical industrial park and its implications for adjacent surface water: Spatial distribution, source characteristics, and ecological risk.

Journal of contaminant hydrology·2026

Same author

Clonal lineage tracing of innate immune cells in human cancer.

Cancer cell·2026

Same author

Comprehensive proteomic meta-analysis identifies novel proteomics alterations in proliferative diabetic retinopathy.

Experimental eye research·2026

Same author

Vertical Root Fracture in Endodontically Treated Teeth: Risk Factors and Future Directions.

Australian endodontic journal : the journal of the Australian Society of Endodontology Inc·2026

Same author

Antimicrobial peptide-derived lipid nanoparticles enable lung-targeted mRNA therapy for multidrug-resistant bacterial pneumonia.

Journal of controlled release : official journal of the Controlled Release Society·2026

Same author

Injectable Microenvironment-Responsive Hydrogel for Local Procyanidin B2 Delivery and Cardiac Ischemia-Reperfusion Repair.

ACS applied materials & interfaces·2026

Same journal

RETRACTED: Zhang et al. A Novel Framework for Reconstruction and Imaging of Target Scattering Centers via Wide-Angle Incidence in Radar Networks. <i>Sensors</i> 2025, <i>25</i>, 6802.

Sensors (Basel, Switzerland)·2026

Same journal

Enhancing Unsupervised Multi-Source Domain Adaptation for Person Re-Identification via Mixture of Experts and Graph-Based Relation.

Sensors (Basel, Switzerland)·2026

Same journal

Development of an Instrumented Glove for Palmar Pressure Assessment in Kayakers.

Sensors (Basel, Switzerland)·2026

Same journal

Development and Experimental Validation of an Autonomous IoT-Based Monitoring System for Real-Time Water Quality Assessment in the Amazon River.

Sensors (Basel, Switzerland)·2026

Same journal

Semi-Supervised Adversarial Learning Framework for Controller Area Network Bus Intrusion Detection.

Sensors (Basel, Switzerland)·2026

Same journal

Smart Optimization Method for Safety Signs in Innovative Manufacturing Environments Integrating Industrial Field IoT Sensors and Knowledge Graphs.

Sensors (Basel, Switzerland)·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 13, 2026

Implementation of a Reference Interferometer for Nanodetection

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

A Compact Dual-Oblique-Fiber Heterodyne Phase-Shifting Point Diffraction Interferometer.

Yongjie Wang^1,2, Conghui Zhu¹, Wenxi Zhang^1,2

¹Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China.

Sensors (Basel, Switzerland)

|June 12, 2026

Summary

This summary is machine-generated.

A new compact dual-oblique-fiber heterodyne phase-shifting point diffraction interferometer (DOF-HPSPDI) offers a low-cost, stable solution for optical testing. This innovative design precisely measures wavefronts for applications like large-aperture component stitching.

Keywords:

heterodyne phase-shifting interferometry oblique fiber optical testing point diffraction interferometer surface measurement wavefront sensing

More Related Videos

A Multimodal Wide-Field Fourier-Transform Raman Microscope

A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Related Experiment Videos

Last Updated: Jun 13, 2026

Implementation of a Reference Interferometer for Nanodetection

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

A Multimodal Wide-Field Fourier-Transform Raman Microscope

A Multimodal Wide-Field Fourier-Transform Raman Microscope

Published on: December 30, 2025

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Area of Science:

Optical Engineering
Metrology
Interferometry

Background:

Point diffraction interferometers (PDIs) are crucial for high-quality optical testing due to their reference wavefront generation.
Existing PDI designs can be complex and costly, limiting their widespread application.

Purpose of the Study:

To propose and demonstrate a compact, low-cost, and highly stable dual-oblique-fiber heterodyne phase-shifting point diffraction interferometer (DOF-HPSPDI).
To enable precise optical testing and sub-aperture stitching of large-aperture optical components.

Main Methods:

Development of a novel dual-oblique-fiber point diffraction wavefront generator (DOF-PDWG) for separate reference and measurement beam generation.
Utilizing heterodyne phase-shifting interferometry (HPSI) for accurate wavefront phase retrieval.
Analysis of theoretical system errors via simulations and experimental validation.

Main Results:

Successful demonstration of a compact and stable DOF-HPSPDI system.
Efficient utilization of fiber-generated diffracted wavefront divergence and common path propagation.
Minimization of system errors through close fiber spacing and reflective structures.

Conclusions:

The proposed DOF-HPSPDI is a feasible, stable, and cost-effective solution for high-precision optical testing.
This compact interferometer shows significant promise for advanced optical metrology and manufacturing applications.