Low-frequency acousto-optic backscattering of Bessel light beams
Sign Up to like & getrecommendations! Published in 2018 at "Optics Communications"
DOI: 10.1016/j.optcom.2018.01.024
Abstract: Abstract The use of Bessel light beams, as well as Bessel acoustic beams, substantially enhances the capabilities of acousto-optic methods for control of optical field. We present a theoretical study of the process of optical… read more here.
Keywords: acousto optic; light beams; bessel; low frequency ... See more keywords
Pulse characteristics in a doubly Q-switched Nd:GGG laser with an acousto-optic modulator and a monolayer graphene saturable absorber
Sign Up to like & getrecommendations! Published in 2017 at "Optics and Laser Technology"
DOI: 10.1016/j.optlastec.2017.05.019
Abstract: Abstract A doubly Q-switched Nd:GGG laser emitting 1064 nm wavelength with an acousto-optic modulator (AOM) and a monolayer graphene saturable absorber (SA) is presented to study the pulse characteristics. In comparison with singly passive Q-switched laser… read more here.
Keywords: switched ggg; optic modulator; acousto optic; ggg laser ... See more keywords
Optogenetic stimulation of complex spatio-temporal activity patterns by acousto-optic light steering probes cerebellar granular layer integrative properties
Sign Up to like & getrecommendations! Published in 2018 at "Scientific Reports"
DOI: 10.1038/s41598-018-32017-w
Abstract: Optogenetics provides tools to control afferent activity in brain microcircuits. However, this requires optical methods that can evoke asynchronous and coordinated activity within neuronal ensembles in a spatio-temporally precise way. Here we describe a light… read more here.
Keywords: optogenetic stimulation; cerebellar granular; acousto optic; spatio temporal ... See more keywords
Acousto-optic modulators for fibre-optic lines
Sign Up to like & getrecommendations! Published in 2020 at "Quantum Electronics"
DOI: 10.1070/qel17378
Abstract: The specific features of efficient matching of acoustooptic devices with single-mode fibres for the cases of isotropic and anisotropic diffraction are considered. The acousto-optic interaction geometry, optimal for modulating an arbitrarily polarised light beam with… read more here.
Keywords: optic lines; optic modulators; modulators fibre; acousto optic ... See more keywords
Acousto-optic tunable filter chromatic aberration analysis and reduction with auto-focus system
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Modern Optics"
DOI: 10.1080/09500340.2018.1454523
Abstract: Abstract An acousto-optic tunable filter (AOTF) displays optical band broadening and sidelobes as a result of the coupling between the acoustic wave and optical waves of different wavelengths. These features were analysed by wave-vector phase… read more here.
Keywords: image; system; acousto optic; tunable filter ... See more keywords
On diffusive scaling in acousto-optic imaging
Sign Up to like & getrecommendations! Published in 2020 at "Inverse Problems"
DOI: 10.1088/1361-6420/ab9f85
Abstract: Acousto-optic imaging (AOI) is a hybrid imaging process. By perturbing the to-be-reconstructed tissues with acoustic waves, one introduces the interaction between the acoustic and optical waves, leading to a more stable reconstruction of the optical… read more here.
Keywords: scaling acousto; reconstruction; optic imaging; acousto optic ... See more keywords
Evidence for terahertz acoustic phonon parametric oscillator based on acousto-optic degenerate four-wave mixing in a silicon doping superlattice
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.98.220304
Abstract: We report first evidence for a 1.0 terahertz (THz) self-starting mirrorless acoustic phonon parametric oscillator (MAPPO) produced from acousto-optic phase-conjugate degenerate four-wave (D4WM) mixing in a THz laser-pumped silicon doping superlattice (DSL). The DSL was… read more here.
Keywords: acousto optic; evidence terahertz; phonon; phonon parametric ... See more keywords
Dissipative Acousto-optic Interactions in Optical Microcavities.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.129.073901
Abstract: We propose and demonstrate experimentally the strong dissipative acousto-optic interaction between a suspended vibrating microfiber and a whispering-gallery microcavity. On the one hand, the dissipative response driven by an external stimulus of acoustic waves is… read more here.
Keywords: acousto optic; optic interactions; interactions optical; dissipative acousto ... See more keywords
Acousto-Optic Catheter Tracking Sensor for Interventional MRI Procedures
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Biomedical Engineering"
DOI: 10.1109/tbme.2018.2868830
Abstract: Objective: The objective of this paper is to introduce an acousto-optic optical fiber sensor for tracking catheter position during interventional magnetic resonance imaging (MRI) to overcome RF induced heating of active markers. Methods: The sensor… read more here.
Keywords: acousto optic; optical fiber; interventional mri; sensor ... See more keywords
RF Oscillators Based on Piezoelectrically Driven Optical Modulation
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Electron Devices"
DOI: 10.1109/ted.2018.2801243
Abstract: This paper investigates the use of piezoelectrically actuated acousto-optic modulators as a building block for generating electronic frequency references at radio frequencies (RFs). Similar to the concept of an optoelectronic oscillator, this approach leverages the… read more here.
Keywords: optical modulation; oscillators based; acousto optic; based piezoelectrically ... See more keywords
An Electrical Method for Acoustic Resonance Frequency Adjustment in Standing-Wave Acousto-Optic Devices
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control"
DOI: 10.1109/tuffc.2021.3133955
Abstract: An acousto-optic (AO) device can be configured to operate in a standing wave (SW) mode. The effectiveness of an SW AO device surpasses the effectiveness of a conventional, running-wave one, when the driving signal frequency… read more here.
Keywords: electrical method; frequency; acousto optic; method acoustic ... See more keywords