Definition of acousto-photorefractive effect

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Photonics Dictionary

acousto-photorefractive effect: The acousto-photorefractive effect refers to a phenomenon in which acoustic waves (sound waves) interact with light waves (photons) within a photorefractive material, resulting in changes in the material's refractive index and/or optical properties. This effect typically occurs in crystals or semiconductors that possess photorefractive properties, meaning they can change their refractive index in response to light exposure.

Key aspects of the acousto-photorefractive effect include:

Interaction mechanism: When acoustic waves pass through a photorefractive material, they induce periodic changes in the material's refractive index. These acoustic waves can be generated externally or within the material itself.

Light-induced changes: Simultaneously, light waves (usually laser beams) interact with the material, causing photo-induced changes in the refractive index due to the photorefractive effect. The combined action of acoustic and optical waves leads to complex interactions affecting the propagation of light through the material.

The acousto-photorefractive effect is utilized in various applications such as:

Optical signal processing: Manipulating and controlling light beams for signal modulation and processing.

Holography: Creating dynamic holograms and spatial light modulators.

Optical computing: Implementing optical logic and information processing.

Nonlinear optics: Studying nonlinear optical phenomena and light-matter interactions.

Research and development: It is also studied for its potential in developing new types of optical devices and systems that rely on the combined interaction of acoustic and optical waves to achieve specific functionalities.

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