Acousto-optic properties of metamaterials

Acousto - Optic Isolator ( Aoi )

ACOUSTO-OPTIC PHENOMENA IN CRYSTALS WITH STRONG ANISOTROPY OF OPTIC AND ELASTIC PROPERTIES V.B.Voloshinov

The paper examines regular trends of acousto-optic interactions taking place in crystals possessing strong anisotropy of optic and elastic properties. The major attention is devoted to analysis of light diffraction in media with large birefringence, i.e. with big difference o e n n n − = ∆ between the refraction indexes of ordinary o n and extraordinary e n polarized optical beams. The analysis...

Experimental Investigation of Acousto-Optic Communications

Covert communications between underwater and aerial platforms would increase the flexibility of surface and air vehicles engaged in undersea warfare by providing a new netcentric warfare communication capability and could have a variety of commercial and oceanographic applications. Research into an acousto-optic sensor shows promise as a means for detecting acoustic data projected towards the w...

Applications of In – Fiber Acousto – Optic Devices

Nowadays, in-fiber acousto-optic devices are increasingly used as frequency shifters, multiplexers, modulators, and tunable filters. They can be easily spliced into optical fiber systems, and the consequent low insertion loss, make them an attractive alternative to bulk optics devices. Our group, established at the Institute of Materials Science, Department of Applied Physics, of the Valencia U...

Nonlinear effects in acousto-optic imaging.

Acousto-optic (AO) imaging is a promising technique that is able to reveal optical properties in the millimeter range inside scattering media by tagging the photon paths with an ultrasonic beam. To increase both the contrast and the resolution of the AO images, we have explored the possibility of using the nonlinear response of the speckle modulation. Variation of the second-harmonic signal as ...