Results 91 to 100 of about 4,602 (218)

Three-dimensional photoacoustic imaging of subcutaneous microvasculature in vivo [PDF]

, 2006
Three-dimensional photoacoustic imaging of subcutaneous microvasculature in small animals is realized in vivo using photoacoustic microscopy. Previously, degraded lateral resolution in the out-of-focus region made three-dimensional visualization ...
Li, Meng-Lin, Maslov, Konstantin, Stoica, George, Wang, Lihong V., Zhang, Hao F.   +4 more
core  

Investigation in acousto-optic laser stabilization for crystal resonator-based optoelectronic oscillators

, 2013
International audiencePotentialities are investigated for using acousto-optic cells based on a TeO2 crystal to stabilize a microwave signal generated by an optoelectronic oscillator.
Salzenstein, Patrice, Trushin, Arseniy S., Voloshinov, Vitaly B.   +2 more
core   +4 more sources

Design of a broadband acousto-optic filter using bulk acoustic wave beam steering with an interdigital transducer

Results in Physics
Acousto-optic tunable filters are photonics devices whose operation is fundamentally based on crystal acoustics. One of the phenomena used to improve performances of bulk acousto-optic devices is acoustic beam steering.
Konstantin B. Yushkov, Natalya F. Naumenko, Vladimir Ya. Molchanov   +2 more
doaj   +1 more source

Functional photoacoustic microscopy in vivo [PDF]

, 2006
Functional photoacoustic microscopy is a hybrid imaging technique that detects laser induced photoacoustic waves to image biological tissues in three dimensions.
Maslov, Konstantin, Oh, Jung-Taek, Stoica, George, Wang, Lihong V., Zhang, Hao F.   +4 more
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Photoacoustic imaging in attenuating acoustic media based on strongly causal models

, 2012
In this paper we derive time reversal imaging functionals for two strongly causal acoustic attenuation models, which have been proposed recently. The time reversal techniques are based on recently proposed ideas of Ammari et al for the thermo-viscous ...
Kalimeris, Konstantinos, Scherzer, Otmar
core   +1 more source

Optical trapping of mesoscale particles and atoms in hollow-core optical fibers: principle and applications

Light: Science & Applications
Hollow-core fiber (HCF) is a special optical waveguide type that can guide light in the air or liquid core surrounded by properly designed cladding structures.
Rui Wang, Wei Li, Zhiwen Xia, Hongchang Deng, Yao Zhang, Rongxin Fu, Shuailong Zhang, Tijmen G. Euser, Libo Yuan, Ningfang Song, Yi Jiang, Shangran Xie   +11 more
doaj   +1 more source

Electrically-controlled suppression of Rayleigh backscattering in an integrated photonic circuit

Nanophotonics
Undesirable light scattering is a fundamental cause for photon loss in nanophotonics. Rayleigh backscattering can be particularly difficult to avoid in wave-guiding systems and arises from both material defects and geometric defects at the subwavelength ...
Örsel Oğulcan E., Noh Jiho, Bahl Gaurav   +2 more
doaj   +1 more source

Toward functional ultrasound-modulated optical tomography: a phantom study [PDF]

, 2008
We present the feasibility of functional ultrasound-modulated optical tomography (UOT) in tissue phantoms with two optical wavelengths. By using intense acoustic bursts and a CCD camera-based speckle contrast detection technique, we observe variations of
Kim, Chulhong, Wang, Lihong V.
core  

Towards very high resolution imaging in ultrasound-modulated optical tomography of biological tissues [PDF]

, 2006
We explored the possibility of applying very high ultrasound frequencies to achieve very high resolution in ultrasound-modulated optical tomography of soft biological tissues.
Kothapalli, Sri-Rajasekhar, Sakadžić, Sava, Wang, Lihong V.   +2 more
core  

Coherence properties of modeless lasers

, 2009
International audienceMost of classical light sources show a close similarity between their first and second order correlation functions (resp. g(1) and g(2)) functions.
Guillet de Chatellus, Hugues, Pique, J. P.   +1 more
core   +1 more source