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Related Concept Videos

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...
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.

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Related Experiment Video

Updated: Jun 8, 2026

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

Self-compensating, all-reflection interferometer.

S Chakrabarti, D M Cotton, J S Vickers

    Applied Optics
    |October 2, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A novel grating interferometer for extreme and far ultraviolet (UV) applications has been developed. This robust, all-reflecting instrument offers high resolving power without moving parts, ideal for space missions.

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    Last Updated: Jun 8, 2026

    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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    Published on: September 5, 2019

    Area of Science:

    • Optics and Photonics
    • Ultraviolet Astronomy
    • Spectroscopy

    Background:

    • Traditional interferometers often require precise alignment and have limitations in UV performance.
    • The extreme and far UV spectrum presents unique challenges for optical instrumentation due to material absorption and scattering.

    Purpose of the Study:

    • To develop a robust grating interferometer for extreme and far UV operation.
    • To create an instrument with high resolving power and tolerance to misalignment for space applications.

    Main Methods:

    • Utilized an all-reflecting optical design incorporating a V-groove, ruled grating as a beam splitter.
    • Employed a self-compensating optical design to enhance stability and reduce sensitivity to alignment errors.
    • Operated a 600-groove/mm plane diffraction grating in the second order.

    Main Results:

    • Achieved a resolving power of approximately 100,000 at 1216 Å.
    • Demonstrated an instrument with no moving parts, simplifying operation and increasing reliability.
    • The design proved tolerant to minor optical misalignments.

    Conclusions:

    • The developed grating interferometer is a promising tool for UV spectroscopy and interferometry.
    • Its robust, all-reflecting, and self-compensating design makes it highly suitable for space-based observations.
    • The instrument's high resolving power enables detailed spectral analysis in the UV range.