scholarly journals Time-domain Brillouin Scattering as a Local Temperature Probe in Liquids

MRS Advances ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 9-14
Author(s):  
Ievgeniia Chaban ◽  
Hyun D. Shin ◽  
Christoph Klieber ◽  
Rémi Busselez ◽  
Vitaly Gusev ◽  
...  
Keyword(s):  
Light Scattering ◽  
Frequency Shift ◽  
Time Domain ◽  
Acoustic Waves ◽  
Brillouin Scattering ◽  
Local Temperature ◽  
Pump Probe ◽  
Probe Technique ◽  
Temperature Probe

ABSTRACTWe present results of time-domain Brillouin scattering (TDBS) to determine the local temperature of liquids. TDBS is based on an ultrafast pump-probe technique to determine the light scattering frequency shift caused by the propagation of coherent acoustic waves in a sample. Since the temperature influences the Brillouin scattering frequency shift, the TDBS signal probes the local temperature of the liquid. Results for the extracted Brillouin scattering frequencies recorded at different liquid temperatures and at different laser powers are shown to demonstrate the usefulness of TDBS as a temperature probe.

Heterodyne pump–probe technique for time-domain studies of optical nonlinearities in waveguides

1992 ◽  
Vol 17 (12) ◽  
pp. 874 ◽  
Author(s):  
K. L. Hall ◽  
G. Lenz ◽  
E. P. Ippen ◽  
G. Raybon
Keyword(s):  
Time Domain ◽  
Optical Nonlinearities ◽  
Pump Probe ◽  
Probe Technique

Observation of stimulated Brillouin scattering in polymer optical fiber with pump–probe technique

2011 ◽  
Vol 36 (12) ◽  
pp. 2378 ◽  
Author(s):  
Yosuke Mizuno ◽  
Masato Kishi ◽  
Kazuo Hotate ◽  
Takaaki Ishigure ◽  
Kentaro Nakamura
Keyword(s):  
Optical Fiber ◽  
Brillouin Scattering ◽  
Stimulated Brillouin Scattering ◽  
Polymer Optical Fiber ◽  
Pump Probe ◽  
Probe Technique ◽  
Stimulated Brillouin

scholarly journals Observation of Backward Guided-Acoustic-Wave Brillouin Scattering in Optical Fibers Using Pump–Probe Technique

2016 ◽  
Vol 8 (3) ◽  
pp. 1-7 ◽  
Author(s):  
Neisei Hayashi ◽  
Heeyoung Lee ◽  
Yosuke Mizuno ◽  
Kentaro Nakamura
Keyword(s):  
Acoustic Wave ◽  
Optical Fibers ◽  
Brillouin Scattering ◽  
Pump Probe ◽  
Probe Technique

Dynamics of Concentrated Colloidal Suspensions

1989 ◽  
Vol 177 ◽  
Author(s):  
D. A. Weitz ◽  
L. Ye ◽  
Ping Sheng ◽  
J. S. Huang ◽  
D. J. Pine ◽  
...  
Keyword(s):  
Light Scattering ◽  
Acoustic Waves ◽  
Volume Fraction ◽  
Brillouin Scattering ◽  
Particle Diameter ◽  
Colloidal Suspensions ◽  
Colloid System ◽  
Wide Range ◽  
Diffusive Modes ◽  
Pmma Particles

ABSTRACTWe study the dynamics of concentrated colloidal suspensions by measuring the frequency dependent structure factor, S(q,w), using light scattering techniques. We introduce Diffusing Wave Spectroscopy, which extends dynamic light scattering to the multiple scattering regime, allowing us to study the lower frequency, diffusive modes of S(q,w), which reflect the Brownian motion of the particles. We study the behavior of the higher-frequency, propagating modes of S(q,w), which reflect acoustic waves, using Brillouin scattering. To study S(q,w) at low qa, where q is the scattering vector and a the particle diameter, we use inverted micelles, and find that the interactions between the micelles has a dramatic impact on the speed of sound as the volume fraction of micelles increases. To study S(q,w) at large qa, we use index matched PMMA particles, allowing us to measure the dispersion curve of phonons in a hard sphere colloid system. Together, these results provide a measure of S(q, w) over a wide range of q and of w.

scholarly journals Review: distributed time-domain sensors based on Brillouin scattering and FWM enhanced SBS for temperature, strain and acoustic wave detection

PhotoniX ◽  
2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Xiaoyi Bao ◽  
Zichao Zhou ◽  
Yuan Wang
Keyword(s):  
Acoustic Wave ◽  
Frequency Shift ◽  
Time Domain ◽  
Brillouin Scattering ◽  
Doppler Frequency ◽  
Time Domain Reflectometry ◽  
Index Of Refraction ◽  
Stokes Wave ◽  
Wave Detection ◽  
Optical Time

AbstractDistributed time-domain Brillouin scattering fiber sensors have been widely used to measure the changes of the temperature and strain. The linear dependence of the temperature and strain on the Brillouin frequency shift enabled the distributed temperature and strain sensing based on mapping of the Brillouin gain spectrum. In addition, an acoustic wave can be detected by the four wave mixing (FWM) associated SBS process, in which phase matching condition is satisfied via up-down conversion of SBS process through birefringence matching before and after the conversion process. Brillouin scattering can be considered as the scattering of a pump wave from a moving grating (acoustic phonon) which induces a Doppler frequency shift in the resulting Stokes wave. The frequency shift is dependent on many factors including the velocity of sound in the scattering medium as well as the index of refraction. Such a process can be used to monitor the gain of random fiber laser based on SBS, the distributed acoustic wave reflect the distributed SBS gain for random lasing radiation, as well as the relative intensity noise inside the laser gain medium. In this review paper, the distributed time-domain sensing system based on Brillouin scattering including Brillouin optical time-domain reflectometry (BOTDR), Brillouin optical time-domain analysis (BOTDA), and FWM enhanced SBS for acoustic wave detection are introduced for their working principles and recent progress. The distributed Brillouin sensors based on specialty fibers for simultaneous temperature and strain measurement are summarized. Applications for the Brillouin scattering time-domain sensors are briefly discussed.

Brillouin light scattering from surface acoustic waves in photonic microwires

2014 ◽  
Author(s):  
Jean-Charles Beugnot ◽  
Sylvie Lebrun ◽  
Gilles Pauliat ◽  
Vincent Laude ◽  
Thibaut Sylvestre
Keyword(s):  
Light Scattering ◽  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Brillouin Light Scattering
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