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A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
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    Area of Science:

    • Physics
    • Optics
    • General Relativity

    Background:

    • Gravitational waves alter spacetime, affecting light propagation.
    • Light scattering in plasmas, like Brillouin scattering, is a known phenomenon.

    Purpose of the Study:

    • To propose an all-optical analog framework for mimicking spacetime distortions.
    • To investigate the effects of dynamic refractive index modulation on light waves.

    Main Methods:

    • Developing a fully covariant, all-optical analog framework.
    • Utilizing meta-optics to engineer synthetic traveling-wave modulations.
    • Mimicking Brillouin-like forward scattering of light in a plasma.

    Main Results:

    • Demonstrated that gravitational waves dynamically modulate the refractive index.
    • Showcased the emergence of a moving scaffold for light-wave interactions.
    • Predicted the appearance of spectral sidebands due to energy and momentum conservation.

    Conclusions:

    • The proposed optical analog can emulate spacetime ripples in laboratory settings.
    • This framework offers a novel approach to studying gravitational wave effects on light.