Results 71 to 80 of about 9,494 (293)

High-Performance Versatile Setup for Simultaneous Brillouin-Raman Microspectroscopy

Physical Review X, 2017
Brillouin and Raman scattering spectroscopy are established techniques for the nondestructive contactless and label-free readout of mechanical, chemical, and structural properties of condensed matter.
F. Scarponi, S. Mattana, S. Corezzi, S. Caponi, L. Comez, P. Sassi, A. Morresi, M. Paolantoni, L. Urbanelli, C. Emiliani, L. Roscini, L. Corte, G. Cardinali, F. Palombo, J. R. Sandercock, D. Fioretto   +15 more
doaj   +1 more source

Dynamic detection of acoustic wave generated by polarization maintaining Brillouin random fiber laser

APL Photonics, 2020
The intrinsic spectral width and intensity dynamics of the acoustic wave generated by the Brillouin random fiber laser were characterized experimentally for the first time.
Zichao Zhou, Liang Chen, Xiaoyi Bao
doaj   +1 more source

Ultrasonic enhanced Brillouin light scattering in water

, 2006
Brillouin light spectra in water was experimentally investigated by a scanning Fabry-Perot interferometer. The optical properties of the scattering media were modulated by a plane ultrasound wave.
Kilicaslan, I., Schweiger, G., Esen, C.
core   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Goos–Hänchen effect for Brillouin light scattering by acoustic phonons [PDF]

Optics Letters, 2018
4 pages, 4 ...
Yuliya Dadoenkova, Nataliya Dadoenkova, Maciej Krawczyk, Igor Lyubchanskii   +3 more
openaire   +3 more sources

Thickness‐Dependent Infrared Emissivity of Ultrathin Freestanding MoSiN Nanocomposite Membranes

Advanced Optical Materials, EarlyView.
ABSTRACT Metals and dielectrics show opposite trends in thickness‐dependent infrared emissivity: metallic films exhibit a rise in emissivity below a critical thickness, while dielectric films show a corresponding decline. For applications demanding both high emissivity and mechanical strength in membranes with nanoscale thickness, combining these ...
Reethu Sebastian, Amrid Amnache, Nadi Braidy, Luc G. Fréchette   +3 more
wiley   +1 more source

Limitations for heterodyne detection of Brillouin scattered light [PDF]

, 1995
One means by which elastic properties of a material may be determined is measuring sound wave velocities in the material, from which elastic moduli of interest can be computed. Velocity can be measured by conventional piezoelectric transduction techniques, by applying laser ultrasonics, or by using Brillouin-scattering methods.
Allemeier, R. T., Wagner, J. W., Telschow, K. L.   +2 more
openaire   +2 more sources

Exciton Radiative Lifetimes in Hexagonal Diamond Ge and SixGe1–x Alloys

Advanced Optical Materials, EarlyView.
Strong room‐temperature photoluminescence reported in hexagonal Ge conflicts with theory predicting a nearly dark band edge. First‐principles calculations of excitonic radiative lifetimes fill a key gap in this debate, showing that pristine hexagonal Ge remains intrinsically weakly emissive, while Si alloying only modestly shortens the lifetime and ...
Michele Re Fiorentin, Michele Amato, Maurizia Palummo   +2 more
wiley   +1 more source

Light bullet generation via stimulated Brillouin scattering

APL Photonics
We propose an all-optical approach to generating space–time wave packets in a multimode slab waveguide via the multilevel interband stimulated Brillouin scattering process. Two pump sources and a single-mode signal are fed into the waveguide.
Der-Han Huang, Cheng Guo, Shanhui Fan
doaj   +1 more source

Influence of incommensurate structure on the elastic constants of crystalline Bi2Sr2CaCu2O8+δ by Brillouin light scattering spectroscopy

Materials Research Express, 2023
Brillouin light scattering spectroscopy was used to probe the room-temperature elasticity of crystalline high- T _c superconductor Bi _2 Sr _2 CaCu _2 O _8+ _δ .
B D E McNiven, J P F LeBlanc, G T Andrews   +2 more
doaj   +1 more source