Acousto-optic imaging promises to provide in vivo images of optical contrast but with the superior spatial reso-lution of ultrasound imaging. Here we present novel quadrature detection of ultrasound-modulated photons with a gain-modulated, image-intensified, CCD camera. The additional detection of ultrasound-modulated fluorescence photons dem-onstrates potential for in vivo acousto-...

This Acousto-Optics feature celebrates the scientific careers of two remarkable scientists, Antoni Sliwinski and Adrian Korpel. The feature includes original papers based on a representative selection of topics that were presented at the Tenth Spring School on Acousto-Optics held in Poland in May 2008.

A novel method of projecting interference patterns using acousto-optics has been developed and implemented in the context of the Accordion Fringe Interferometry (AFI) three-dimensional measurement technique developed at MIT Lincoln Laboratory. AFI is an active technique that relies on projecting interference fringes and triangulation to recover range information. AFI is suitable for a wide rang...

We propose an original adaptive wavefront holographic setup based on the photorefractive effect (PR), to make real-time measurements of acousto-optic signals in thick scattering media, with a high flux collection at high rates for breast tumor detection. We describe here our present state of the art and understanding on the problem of breast imaging with PR detection of the acousto-optic signal.

We demonstrate use of the modulation transfer function method in the spectral domain for dynamic measurement of the spectral resolution and modulation contrast of acousto-optic light dispersive delay lines and programmable filters with synthesized transmission. The method is useful for performance characterization of acousto-optic devices for ultrafast pulse shaping and adaptive spectroscopy.

The development of opt electronic technology in the past two decades has intensified research on devices that control and manipulate optical radiation. Acousto-optic devices are based on acousto-optic effects in which the optical medium is altered by the presence of ultrasound. Examples of acousto-optic devices include optical modulators, deflectors, scanners, Q-switches, isolators, and frequen...

Acousto-optical coherence tomography (AOCT) consists in using random phase jumps on ultrasound and light to achieve a millimeter resolution when imaging thick scattering media. We combined this technique with heterodyne off-axis digital holography. Two-dimensional images of absorbing objects embedded in scattering phantoms are obtained with a good signal-to-noise ratio. We study the impact of t...

We investigate in detail the origin of multiple resonance peaks experimentally observed in an all-fiber acousto-optic tunable filter built with a photonic crystal fiber having slightly deformed air-hole structure and non-circular outer cladding. A model for the acousto-optic mode coupling in the PCF is formulated taking into account both the acoustic and the optical birefringence. All experimen...

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...