Acousto-optic devices represented by acousto-optic tunable filters (AOTFs), have the advantages of wide wavelength range from ultraviolet to long-wave infrared and fast switching speed. Nowadays, spectral systems become very important scientific instruments in laboratory. There are many factors be considered when we choose different solutions for systems, but there is no comprehensive analysis ...

The ability to generate efficient giga-terahertz coherent acoustic phonons with femtosecond laser makes acousto-optics a promising candidate for ultrafast light processing, which faces electronic device limits intrinsic to complementary metal oxide semiconductor technology. Modern acousto-optic devices, including optical mode conversion process between ordinary and extraordinary light waves (an...

We investigate the acousto-plasmonic dynamics of metallic nano-objects by means of resonant Raman scattering and time-resolved femtosecond transient absorption. We observe an unexpectedly strong acoustic vibration band in the Raman scattering of silver nanocolumns, usually not found in isolated nano-objects. The frequency and the polarization of this unexpected Raman band allow us to assign it ...

in the 2 4 μm with Low RF Drive Power S. Valle, J.D. Ward, C. Pannell, N.P. Johnson Gooch and Housego (UK) Ltd, Dowlish Ford, Ilminster, Somerset, TA19 0PF, UK Optoelectronics Group, School of Engineering, University of Glasgow, Glasgow G12 8LT, UK Gooch and Housego (Orlando), 4632 36th street, Orlando, Fl 32811, USA The λ dependence on acoustic eld intensity (and hence RF drive power) can rend...

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...

We present an instructional undergraduate laboratory that introduces the student to an acousto-optic modulator (AOM) in the context of an optical heterodyning experiment. A moving diffraction grating is used to illustrate the internal functioning of an acousto-optic modulator and to make optical heterodyning experiments accessible to any undergraduate laboratory. The concepts and techniques pre...

Power Scaling of a Q-switched laser designed for internal frequency conversion is demonstrated by combining two Nd:YVO4-gain-channels with a time-multiplexing scheme based on a single crystal photo elastic modulator (SCPEM). Both channels are coupled with a polarizer and share an output-coupler and acousto-optic modulator (AOM). In order to combine two channels by time multiplexing, the single ...

We discuss the theoretical and experimental investigation of acousto-optic dispersive tunable filters, based on quasi-collinear geometry of light-sound interaction in a tellurium dioxide single crystal. The geometry uses the effect of strong acoustic anisotropy in the paratellurite as well as peculiarities of acoustic wave reflections at the free boundary of the crystal. A mathematical concept ...

A page-oriented, angle-multiplexed volume holographic optical-memory recording system has been constructed. This memory is addressed by the use of an acousto-optic deflector with a random-access time of 16 µs per page. This enables data transfer rates of 5.28 Gbits/s when pages of binary data are being stored. The reconstruction quality of images stored as memory pages is assessed with the qual...

Acousto-optic imaging (AOI) enables optical-contrast deep inside scattering samples via localized ultrasound-modulation of scattered light. While AOI allows optical investigations at depths, its resolution is inherently limited by the ultrasound wavelength, prohibiting microscopic investigations. Here, we propose a computational approach that diffraction-limited using conventional system. We ac...