Results 111 to 120 of about 518,652 (261)
Electrically-controlled suppression of Rayleigh backscattering in an integrated photonic circuit
NanophotonicsUndesirable 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. +2 more
doaj +1 more source
The development of a high speed 3D 2-photon microscope for neuroscience
, 2010 The progress of neuroscience is limited by the instrumentation available to it for studying the brain. At present, there is a serious instrumentation gap between functional Magnetic Resonance Imaging (fMRI) of whole brains and the microscopic scale ...
Kirkby, P.A.
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An embedded adaptive optics real time controller [PDF]
, 2007 The design and realisation of a low cost, high speed control system for adaptive optics (AO) is presented. This control system is built around a field programmable gate array (FPGA).
Saunter, Christopher D. +1 more
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Light: Science & ApplicationsHollow-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 +11 more
doaj +1 more source
Micro-machined membrane deformable mirrors for cryogenic adaptive optics [PDF]
, 2002 In this Thesis, the suitability of 37 actuator Micro-machined membrane deformable mirrors (MMDM) for adaptive optics at cryogenic temperatures is evaluated. A method is described to safely cool MMDMs to 78K. The initial surface figures of three MMDMs are
Dyson, H.M., Dyson, Harold Michael
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Acousto-optical interaction and its advanced applications [PDF]
, 2013 In this this work, the acousto-optical interaction is studied. Since its inception, in 1922, it has been widely studied and applied. Here, the development of three advanced application of this branch of physics is considered.
ADAN OMAR ARELLANES BERNABE
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Acousto-optic tomography beyond the acoustic diffraction-limit using speckle decorrelation
, 2018 Acousto-optic tomography (AOT) enables optical-contrast imaging deep inside scattering samples via localized ultrasound modulation of scattered light.
Daniel Doktofsky (10873488) +2 more
core +1 more source
A Comparison of Acoustic Field Measurement by a Microphone and by an Optical Interferometric Probe
Acta Polytechnica, 2002 The objective of this work is to show that our optical method for measuring acoustic pressure is in some way superior to measurement using a microphone. Measurement of the integral acoustic pressure in the air by a laser interferometric probe is compared
R. Bálek, Z. Šlegrová
doaj
Non-conventional ultrasound transducer geometry facilitates remote light control within samples
JPhys PhotonicsLight control inside a sample is central in areas as relevant as life sciences and material sciences. Traditionally, this is achieved by using external devices, which can be limited by a short working distance, scattering-limited focusing depth, and ...
Jordi Torres-Durall, Martí Duocastella
doaj +1 more source
Advances in Spectral Imaging: A Review of Techniques and Technologies
IEEE AccessSpectral imaging systems enable a significant leap forward in identifying and characterizing materials and objects through their unique spectral signatures.
Sani Mukhtar, Amir Arbabi, Jaime Viegas
doaj +1 more source