Yes, it is possible to use light to suppress or control sound waves through a phenomenon called "acoustic radiation pressure" or "photoacoustic effect." The photoacoustic effect occurs when a material absorbs light energy and converts it into acoustic energy, resulting in the generation of sound waves.
The process involves the following steps:
Light absorption: When light interacts with a material, it can be absorbed by the material's molecules or particles. This absorption leads to the generation of localized heating or thermal expansion.
Thermal expansion: The absorbed light energy causes the material to undergo thermal expansion, resulting in a rapid increase in temperature in the illuminated regions. As a result, the material undergoes an expansion and generates pressure waves or sound waves.
Sound wave propagation: The pressure waves generated by the thermal expansion of the material propagate through the surrounding medium, such as air, as sound waves.
By controlling the intensity, wavelength, and spatial distribution of the light, it is possible to manipulate the generation and propagation of sound waves. For example, by using lasers with precise timing and positioning, it is conceivable to induce local heating in specific regions of a material and generate sound waves that can interfere with or suppress other sound waves.
It's important to note that the photoacoustic effect is typically more effective at higher light intensities and in materials that exhibit strong light absorption properties. Additionally, the application of light to manipulate sound waves is an active area of research and is not yet widely utilized in practical scenarios.