Results 31 to 40 of about 1,754 (255)

Dispersive Fourier Transformation for Versatile Microwave Photonics Applications [PDF]

open access: yes, 2014
: Dispersive Fourier transformation (DFT) maps the broadband spectrum of an ultrashort optical pulse into a time stretched waveform with its intensity profile mirroring the spectrum using chromatic dispersion.
Wang, Chao, Chao Wang
core   +1 more source

Synthetic dispersion interferometry for relative atmospheric pressure sensing [PDF]

open access: yesOptics Express, 2023
We present a modified version of the two-arm, two-color, single second harmonic generation heterodyne dispersion interferometer, as introduced by Irby et. al. [Rev. Sci. Instrum. 70, 699 (1999) 10.1063/1.1149489]. The amount of optical elements is reduced and digital in-phase and quadrature demodulation is used to retrieve the phase shift from a single
Uittenbosch, Hugo   +3 more
openaire   +3 more sources

Vibration compensating beam scanning interferometer for surface measurement [PDF]

open access: yes, 2007
Light beam scanning using a dispersive element and wavelength tuning is coupled with fibre-optic interferometry to realize a new surface measurement instrument. The instrument is capable of measuring nano-scale surface structures and form deviation.
Wang, Kaiwei   +3 more
core   +1 more source

Nanometer scale titanium surface texturing are detected by signaling pathways involving transient FAK and Src activations. [PDF]

open access: yesPLoS ONE, 2014
BACKGROUND:It is known that physico/chemical alterations on biomaterial surfaces have the capability to modulate cellular behavior, affecting early tissue repair.
Willian F Zambuzzi   +9 more
doaj   +1 more source

Quantum Hysteresis in Coupled Light–Matter Systems

open access: yesEntropy, 2016
We investigate the non-equilibrium quantum dynamics of a canonical light–matter system—namely, the Dicke model—when the light–matter interaction is ramped up and down through a cycle across the quantum phase transition. Our calculations reveal a rich set
Fernando J. Gómez-Ruiz   +4 more
doaj   +1 more source

A Chromate-Free and Convenient Route to Fabricate Thin and Compact Conversion Coating for Corrosion Protection on LZ91 Magnesium Alloy

open access: yesNanomaterials, 2022
This study characterizes and determines the corrosion resistance of Mn-Ce conversion coated LZ91 magnesium alloy that undergoes pretreatments. It is challenging to process large and curved workpieces in the industry because the geometric shapes are ...
Chun-Wei Chen   +5 more
doaj   +1 more source

Material-resolved and thickness-sensitive lensless imaging using high-harmonic generation: From diffractive shear interferometry to ptychography [PDF]

open access: yesEPJ Web of Conferences
Microscopy with table-top high-harmonic generation (HHG) sources enable high-resolution imaging with excellent material contrast, due to the short wavelength and numerous element-specific absorption edges available in this spectral range.
Zhang Fengling   +5 more
doaj   +1 more source

Evaluation of bone growth around bioactive glass S53P4 by scanning acoustic microscopy co-registered with optical interferometry and elemental analysis

open access: yesScientific Reports, 2023
Bioactive glass (BAG) is a bone substitute that can be used in orthopaedic surgery. Following implantation, the BAG is expected to be replaced by bone via bone growth and gradual degradation of the BAG.
Axi Holmström   +14 more
doaj   +1 more source

Nonlocal cancellation of dispersion in Franson interferometry [PDF]

open access: yesPhysical Review A, 2013
Dispersion and its cancellation in entanglement-based nonlocal quantum measurements are of fundamental and practical interests. We report the first demonstration of cancellation of femtosecond-level dispersion by inverting the sign of the differential dispersion between the long and short paths in only one arm of a fiber-based Franson interferometer ...
Zhong, Tian, Wong, Franco N. C.
openaire   +3 more sources

Fast surface measurement using wavelength scanning interferometry with compensation of environmental noise

open access: yes, 2010
We introduce a new optical interferometry system for fast areal surface measurement of microscale and nanoscale surfaces that are immune to environmental noise.
Gao, F.   +5 more
core   +1 more source

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