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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.
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...

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Related Experiment Video

Updated: Jun 15, 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

Interferometric construction of circular gratings.

E Leith, H Chen, G Collins

    Applied Optics
    |March 18, 2010
    PubMed
    Summary

    This study demonstrates a novel method for creating low noise diffraction gratings. A circular grating interferometer and an extended light source are key to achieving high-quality optical components.

    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Diffraction gratings are essential optical components used in various spectroscopic and photonic applications.
    • Achieving low noise and high efficiency in diffraction gratings is a persistent challenge in optical engineering.

    Purpose of the Study:

    • To present a new method for constructing low noise diffraction gratings.
    • To explore the use of a circular grating interferometer for improved grating fabrication.

    Main Methods:

    • Construction of diffraction gratings using a circular grating interferometer.
    • Illumination of the interferometer with a polychromatic or extended light source.

    Main Results:

    • Successfully fabricated low noise diffraction gratings.

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    Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
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    Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
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    Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System
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    Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

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  • The method facilitates the creation of high-quality optical components.

    • Conclusions:

    • The circular grating interferometer offers an effective approach for producing low noise diffraction gratings.
    • This technique advances the fabrication of precision optical elements for advanced applications.