Results 41 to 50 of about 54,040 (257)

Evidence of Brillouin scattering in an ytterbium-doped double-clad fiber laser [PDF]

open access: yes, 2002
We have designed and performed an experiment that permitted direct observation of Brillouin backscattering in an Yb-doped double-clad fiber laser. Fifteen Brillouin-shifted frequencies were observed for the first time to our knowledge.
A. Hideur   +6 more
core   +2 more sources

Quantum theory for parametric interactions of light and hypersound [PDF]

open access: yes, 1965
The problem of energy exchange between two electro-magnetic modes of different frequencies and an acoustic mode is formulated and solved. The results of the quantum mechanical analysis are also analyzed in classical terms and are found to be consistent ...
Yariv, A.
core   +1 more source

Benefits of Spectral Property Engineering in Distributed Brillouin Fiber Sensing

open access: yesSensors, 2021
As one of the most consolidated distributed fiber sensors based on stimulated Brillouin scattering, the Brillouin optical time-domain analyzer (BOTDA) has been developed for decades.
Cheng Feng, Thomas Schneider
doaj   +1 more source

Stimulated scattering of electromagnetic waves carrying orbital angular momentum in quantum plasmas [PDF]

open access: yes, 2012
We investigate stimulated scattering instabilities of coherent circularly polarized electromagnetic (CPEM) waves carrying orbital angular momentum (OAM) in dense quantum plasmas with degenerate electrons and nondegenerate ions.
Eliasson, Bengt   +2 more
core   +2 more sources

Phase-locking in cascaded stimulated Brillouin scattering

open access: yesNew Journal of Physics, 2016
Cascaded stimulated Brillouin scattering is a complex nonlinear optical process that results in the generation of several optical waves that are frequency shifted by an acoustic resonance frequency.
Thomas F S Büttner   +4 more
doaj   +1 more source

High-speed stimulated Brillouin scattering spectroscopy at 780 nm

open access: yesAPL Photonics, 2016
We demonstrate a high-speed stimulated Brillouin scattering (SBS) spectroscopy system that is able to acquire stimulated Brillouin gain point-spectra in water samples and Intralipid tissue phantoms over 2 GHz within 10 ms and 100 ms, respectively ...
Itay Remer, Alberto Bilenca
doaj   +1 more source

Controlled beat-wave Brillouin scattering in the ionosphere

open access: yesNature Communications, 2021
Nonlinear wave mixing has been explored in space plasma. Here the authors report beat-wave Brillouin scattering experiment at EISCAT, in which two radio waves at different transmitted frequencies are driving ion acoustic waves in the ionosphere, leading ...
B. Eliasson   +11 more
doaj   +1 more source

High-Accuracy Spectral Measurement of Stimulated-Brillouin-Scattering Lidar Based on Hessian Matrix and Steger Algorithm

open access: yesRemote Sensing, 2023
The measurement accuracy of Brillouin scattering spectra is crucial for ocean remote sensing by Brillouin scattering lidar. Due to the limited resolution of ICCD cameras, the traditional processing methods remain at the pixel or partial sub-pixel level ...
Zhiqiang Liu   +7 more
doaj   +1 more source

Comparative analysis of stimulated Brillouin scattering at 2  µm in various infrared glass-based optical fibers

open access: yesJournal of the Optical Society of America B, 2020
We provide experimental characterization of stimulated Brillouin scattering at 2-µm wavelength in step-index optical fibers made of various types of infrared materials.
M. Deroh   +8 more
semanticscholar   +1 more source

Spontaneous Brillouin Scattering Spectrum and Coherent Brillouin Gain in Optical Fibers

open access: yesApplied Sciences, 2018
Brillouin light scattering describes the diffraction of light waves by acoustic phonons, originating from random thermal fluctuations inside a transparent body, or by coherent acoustic waves, generated by a transducer or from the interference of two ...
Vincent Laude, Jean-Charles Beugnot
doaj   +1 more source

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