Results 61 to 70 of about 25,400 (165)

Brillouin scattering studies in Fe$_3$O$_4$ across the Verwey transition

, 2005
Brillouin scattering studies have been carried out on high quality single crystals of Fe$_3$O$_4$ with [100] and [110] faces in the temperature range of 300 to 30 K.
A. K. Sood, A. Kozłowski, A. Kozłowski, Chandrabhas Narayana, G. I. Stageman, H. Boukari, H. Z. Cummins, J. D. Comins, J. M. Honig, J. R. Sandercock, J. Yoshida, Md. Motin Seikh, P. A. Metcalf, R. Aragón, R. Becker, R. M. Bozorth, R. Pauthenet, X. Zhang   +17 more
core   +1 more source

Controlling phonons and photons at the wavelength-scale: silicon photonics meets silicon phononics [PDF]

, 2018
Radio-frequency communication systems have long used bulk- and surface-acoustic-wave devices supporting ultrasonic mechanical waves to manipulate and sense signals. These devices have greatly improved our ability to process microwaves by interfacing them
Baets, Roel, Safavi-Naeini, Amir H., Van Laer, Raphaël, Van Thourhout, Dries   +3 more
core   +2 more sources

Molecular dynamic simulation of a homogeneous bcc -> hcp transition

, 2001
We have performed molecular dynamic simulations of a Martensitic bcc->hcp transformation in a homogeneous system. The system evolves into three Martensitic variants, sharing a common nearest neighbor vector along a bcc direction, plus an fcc region ...
A. Heiming, A. Heiming, B.I. Halperin, B.L. Zhang, D.T. Keating, F. Güthoff, G.S. Bales, H.E. Cook, J. R. Morris, J. Trampenau, J.A. Krumhansl, J.A. Krumhansl, J.D. Axe, J.R. Morris, J.R. Morris, J.R. Morris, K. M. Ho, M. Bulenda, N. W. Ashcroft, P.-A. Lindgard, S.C. Moss, U. Pinsook, U. Pinsook, U. Pinsook, W. Lin, W. Petry, W.C. Kerr, W.G. Burgers, Y. Noda, Yu.N. Gornostyrev, Yu.N. Gornostyrev, Yu.N. Gornostyrev, Z. Nishiyama   +32 more
core   +1 more source

Vibrations in glasses and Euclidean Random Matrix theory [PDF]

, 2001
We study numerically and analytically a simple off-lattice model of scalar harmonic vibrations by means of Euclidean random matrix theory. Since the spectrum of this model shares the most puzzling spectral features with the high-frequency domain of ...
Grigera, T. S., Martin-Mayor, V., Parisi, G., Verrocchio, P.   +3 more
core   +3 more sources

Brillouin Frequency Shift of Fiber Distributed Sensors Extracted from Noisy Signals by Quadratic Fitting

Sensors, 2018
It is a basic task in Brillouin distributed fiber sensors to extract the peak frequency of the scattering spectrum, since the peak frequency shift gives information on the fiber temperature and strain changes.
Hanrong Zheng, Zujie Fang, Zhaoyong Wang, Bin Lu, Yulong Cao, Qing Ye, Ronghui Qu, Haiwen Cai   +7 more
doaj   +1 more source

Observation of Surface-Avoiding Waves: A New Class of Extended States in Periodic Media

, 2006
Coherent time-domain optical experiments on GaAs-AlAs superlattices reveal the exis-tence of an unusually long-lived acoustic mode at ~ 0.6 THz, which couples weakly to the environment by evading the sample boundaries. Classical as well as quantum states
A. Yariv, B. Jusserand, I. Newton, I. Tamm, J. Singleton, J. D. Joannopoulos, J. F. Nye, L. Brillouin, L. M. Brekhovskikh, M. Reason, M. Trigo, R. Merlin, R. Merlin, R. S. Goldman, T. A. Eckhause, T. Dekorsy   +15 more
core   +1 more source

Application of Raman and Brillouin Scattering Phenomena in Distributed Optical Fiber Sensing

Frontiers in Physics, 2019
We present a review of the basic operating principles and measurement schemes of standalone and hybrid distributed optical fiber sensors based on Raman and Brillouin scattering phenomena. Such sensors have been attracting a great deal of attention due to
Yonas Muanenda, Claudio J. Oton, Fabrizio Di Pasquale   +2 more
doaj   +1 more source

Hybrid Distributed Optical Fiber Sensor for the Multi-Parameter Measurements

Sensors, 2023
Distributed optical fiber sensors (DOFSs) are a promising technology for their unique advantage of long-distance distributed measurements in industrial applications.
Xiao Zhou, Feng Wang, Chengyu Yang, Zijing Zhang, Yixin Zhang, Xuping Zhang   +5 more
doaj   +1 more source

Brillouin amplification in phase coherent transfer of optical frequencies over 480 km fiber

, 2010
We describe the use of fiber Brillouin amplification (FBA) for the coherent transmission of optical frequencies over a 480 km long optical fiber link.
Diddams, Ferreira, G. Grosche, Geng, Grosche, Grosche, H. Schnatz, Ippen, Lee, Lopez, Ma, O. Terra, Olsson, Rubiola, Schnatz, Smith, Terra, Tkach, Williams   +18 more
core   +1 more source

Design of Wide-Band Frequency Shift Technology by Using Compact Brillouin Fiber Laser for Brillouin Optical Time Domain Reflectometry Sensing System

IEEE Photonics Journal, 2012
A novel wide-band optical frequency shift technology by using a compact single-frequency Brillouin fiber laser (BFL) configured with high-doped Er3+ fiber and high nonlinear fiber (HNLF) is proposed and investigated experimentally.
Yunqi Hao, Qing Ye, Zhengqing Pan, Fei Yang, Haiwen Cai, Ronghui Qu, Qinyuan Zhang, Zhongmin Yang   +7 more
doaj   +1 more source