Cutting- Edge Gravitational-Wave Detectors: Technology & Innovations

Year : 2025 | Volume : 01 | Issue : 01 | Page :
    By

    Rohit Lather,

  1. Head of Department, Department of Multidisciplinary Engineering, The NorthCap University, Gurugram, Haryana, India

Abstract

Gravitational wave detectors using laser interferometry are sophisticated instruments designed to measure the ripples in spacetime caused by cosmic events such as the merging of black holes or neutron stars. This schematic outlines the fundamental components and working principle of a typical laser interferometric gravitational wave detector, such as those used in the LIGO and Virgo observatories. The core of the detector is an interferometer, typically a Michelson interferometer, with two perpendicular arms extending several kilometers. Laser light is split into two beams, each traveling down one arm of the interferometer. Mirrors at the ends of these arms reflect the laser beams back to the beam splitter, where they recombine and create an interference pattern. Gravitational waves passing through the detector cause minute distortions in spacetime, changing the lengths of the arms slightly. These changes alter the interference pattern of the recombined laser beams. Highly sensitive photodetectors measure these changes, and data analysis techniques are used to extract the gravitational wave signal from the noise. Below is a simplified schematic representation of a laser interferometric gravitational wave detector: Laser Source, Generates a coherent laser beam. Beam Splitter, Splits the laser beam into two beams traveling down perpendicular arms. Arms (1 & 2), Two perpendicular arms of the interferometer, each several kilometers long, with mirrors at the ends. End Mirrors, Reflect the laser beams back to the beam splitter. Photodetectors, Measure the interference pattern of the recombined laser beams.

Keywords: Gravitational waves, Interferometry, LIGO (Laser Interferometer Gravitational-Wave Observatory), Virgo, KAGRA (Kamioka Gravitational Wave Detector)

[This article belongs to International Journal of Universe ]

How to cite this article:
Rohit Lather. Cutting- Edge Gravitational-Wave Detectors: Technology & Innovations. International Journal of Universe. 2025; 01(01):-.
How to cite this URL:
Rohit Lather. Cutting- Edge Gravitational-Wave Detectors: Technology & Innovations. International Journal of Universe. 2025; 01(01):-. Available from: https://journals.stmjournals.com/iju/article=2025/view=214660


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Regular Issue Subscription Review Article
Volume 01
Issue 01
Received 04/03/2025
Accepted 16/05/2025
Published 25/06/2025
Publication Time 113 Days
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