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Related Concept Videos

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...
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.
Interference and Superposition of Waves01:07

Interference and Superposition of Waves

When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
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...
Atomic Absorption Spectroscopy: Interference01:25

Atomic Absorption Spectroscopy: Interference

Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
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Atomic Emission Spectroscopy: Interference01:30

Atomic Emission Spectroscopy: Interference

In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...

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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Double-exposure holographic interferometry using commonpath reference waves.

G E Sommargren

    Applied Optics
    |February 20, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a novel double-exposure holographic interferometry technique for precise interferogram analysis. The method utilizes unique optical components for enhanced accuracy in optical and nondestructive testing applications.

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    Last Updated: Jun 16, 2026

    Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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    Area of Science:

    • Optics and Photonics
    • Interferometry
    • Holography

    Background:

    • Holographic interferometry is a powerful tool for measuring deformations and surface changes.
    • Accurate analysis of interferograms can be challenging due to environmental factors and optical limitations.

    Purpose of the Study:

    • To present a variation of double-exposure holographic interferometry for accurate interferogram analysis.
    • To introduce novel optical components that improve the precision of holographic interferometry.

    Main Methods:

    • Development of a reference wave generator producing two common-path, orthogonally polarized, diffuse reference waves.
    • Implementation of an optical phase shifter to vary the relative phase of reconstructed images in small increments.
    • Experimental and analytical description of the incorporation of these components into a holographic setup.

    Main Results:

    • The presented technique allows for accurate analysis of interferograms.
    • Demonstration of the method's efficacy in optical and nondestructive testing.
    • Quantification and presentation of the technique's accuracy.

    Conclusions:

    • The novel holographic interferometry technique offers enhanced accuracy for deformation analysis.
    • The developed optical components are key to achieving precise interferogram evaluation.
    • This method provides a reliable approach for optical and nondestructive testing applications.