Results 31 to 40 of about 1,044,226 (289)

Contra-intuitive features of time-domain Brillouin scattering in collinear paraxial sound and light beams

open access: yesPhotoacoustics, 2020
Time-domain Brillouin scattering is an opto-acousto-optical probe technique for the evaluation of transparent materials. Via optoacoustic conversion, ultrashort pump laser pulses launch coherent acoustic pulses in the sample.
Vitalyi E. Gusev
doaj   +1 more source

Treatments of Thermal Neutron Scattering Data and Their Effect on Neutronics Calculations

open access: yesFrontiers in Energy Research, 2021
In the conventional method to generate thermal scattering cross section of moderator materials, only one of the coherent elastic scattering and incoherent elastic scattering is considered in neutronics calculations.
Tiejun Zu   +7 more
doaj   +1 more source

Heterodyne x-ray diffuse scattering from coherent phonons

open access: yesStructural Dynamics, 2017
Here, we report Fourier-transform inelastic x-ray scattering measurements of photoexcited GaAs with embedded ErAs nanoparticles. We observe temporal oscillations in the x-ray scattering intensity, which we attribute to inelastic ...
M. Kozina   +11 more
doaj   +1 more source

Coherent Stokes Raman scattering microscopy (CSRS)

open access: yesNature Communications, 2023
We report the first implementation of laser scanning coherent Stokes Raman scattering (CSRS) microscopy. To overcome the major challenge in CSRS imaging, we show how to suppress the fluorescence background by narrow bandpass filter and a lock-in based ...
Sandro Heuke, Hervé Rigneault
doaj   +1 more source

The small slope approximation method applied to a two dimensional dielectric-topological insulator material rough interface

open access: yesAlexandria Engineering Journal, 2023
In this paper, the first order perturbation theory (PT) and the small slope approximation (SSA) are employed to analyze the scattering behavior of a two dimensional dielectric-topological insulator (TI) rough interface with Gaussian distribution.
Muhammad Sajid Hanif   +2 more
doaj   +1 more source

Coherent backscattering of light by nonlinear scatterers [PDF]

open access: yesPhysical Review E, 2005
We theoretically study the propagation of light in a disordered medium with nonlinear scatterers. We especially focus on interference effects between reversed multiple scattering paths, which lead to weak localization and coherent backscattering. We show that, in the presence of weakly nonlinear scattering, constructive interferences exist in general ...
Wellens, Thomas   +3 more
openaire   +3 more sources

New Material Exploration to Enhance Neutron Intensity below Cold Neutrons: Nanosized Graphene Flower Aggregation

open access: yesNanomaterials, 2022
It is proposed that nanosized graphene aggregation could facilitate coherent neutron scattering under particle size conditions similar to nanodiamonds to enhance neutron intensity below cold neutrons.
Makoto Teshigawara   +9 more
doaj   +1 more source

Tutorial: Coherent Raman light matter interaction processes

open access: yesAPL Photonics, 2018
Coherent Raman scattering processes such as coherent anti-Stokes Raman scattering and stimulated Raman scattering are described in a tutorial way keeping simple physical pictures and simple derivations.
Hervé Rigneault, Pascal Berto
doaj   +1 more source

Coherent Raman scattering imaging with a near-infrared achromatic metalens

open access: yesAPL Photonics, 2021
Miniature handheld imaging devices and endoscopes based on coherent Raman scattering are promising for label-free in vivo optical diagnosis. Toward the development of these small-scale systems, a challenge arises from the design and fabrication of ...
Peng Lin   +6 more
doaj   +1 more source

Evaluation of the Land GNSS-Reflected DDM Coherence on Soil Moisture Estimation from CYGNSS Data

open access: yesRemote Sensing, 2021
With the development of spaceborne global navigation satellite system-reflectometry (GNSS-R), it can be used for terrestrial applications as a promising remote sensing tool, such as soil moisture (SM) retrieval.
Zhounan Dong, Shuanggen Jin
doaj   +1 more source

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