Time-domain theory of resonant Rayleigh scattering by quantum wells: Early-time evolution

1996 ◽  
Vol 54 (20) ◽  
pp. 14572-14579 ◽  
Author(s):  
D. S. Citrin
Keyword(s):  
Quantum Wells ◽  
Time Evolution ◽  
Time Domain ◽  
Rayleigh Scattering ◽  
Early Time ◽  
Domain Theory

scholarly journals Distributed Static and Dynamic Strain Measurements in Polymer Optical Fibers by Rayleigh Scattering

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5049
Author(s):  
Agnese Coscetta ◽  
Ester Catalano ◽  
Enis Cerri ◽  
Ricardo Oliveira ◽  
Lucia Bilro ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Time Domain ◽  
Rayleigh Scattering ◽  
Cost Effective ◽  
Time Domain Reflectometry ◽  
Dynamic Strain ◽  
Strain Measurements ◽  
Graded Index ◽  
Optical Time ◽  
Polymer Optical Fibers

We demonstrate the use of a graded-index perfluorinated optical fiber (GI-POF) for distributed static and dynamic strain measurements based on Rayleigh scattering. The system is based on an amplitude-based phase-sensitive Optical Time-Domain Reflectometry (ϕ-OTDR) configuration, operated at the unconventional wavelength of 850 nm. Static strain measurements have been carried out at a spatial resolution of 4 m and for a strain up to 3.5% by exploiting the increase of the backscatter Rayleigh coefficient consequent to the application of a tensile strain, while vibration/acoustic measurements have been demonstrated for a sampling frequency up to 833 Hz by exploiting the vibration-induced changes in the backscatter Rayleigh intensity time-domain traces arising from coherent interference within the pulse. The reported tests demonstrate that polymer optical fibers can be used for cost-effective multiparameter sensing.

Simple inversion of time‐domain electromagnetic data

Geophysics ◽  
1984 ◽  
Vol 49 (7) ◽  
pp. 925-933 ◽  
Author(s):  
C. T. Barnett
Keyword(s):  
Time Domain ◽  
Eddy Currents ◽  
Early Time ◽  
Late Time ◽  
Current Filament ◽  
Equivalent Current ◽  
Time Domain Electromagnetic ◽  
Inversion Procedure ◽  
Current Filaments ◽  
Simple Inversion

The eddy currents induced in a thin confined conductor by a fixed‐loop time‐domain EM system can be represented by a single equivalent current filament. The equivalent current filament stays in the plane of the conductor at all times during the decay of the secondary field, but tends to migrate from a position of maximum primary field coupling at early time toward the center of the conductor at late time. This filament approximation is used in the design of a least‐squares inversion procedure which fits circular or rectangular current filaments to an observed eddy current distribution. The inversion procedure provides a rapid but precise means of estimating the position, size, and attitude of a conductor which has been detected by a time‐domain EM survey.

Modal superposition in the time domain: Theory and experimental results

1995 ◽  
Vol 97 (1) ◽  
pp. 92-97 ◽  
Author(s):  
Marinus M. Boone ◽  
Gilles Janssen ◽  
Michiel van Overbeek
Keyword(s):  
Time Domain ◽  
Experimental Results ◽  
Domain Theory ◽  
Modal Superposition ◽  
The Time Domain

scholarly journals Time-domain theory of forerunners

1998 ◽  
Vol 15 (2) ◽  
pp. 487 ◽  
Author(s):  
Anders Karlsson ◽  
Sten Rikte
Keyword(s):  
Time Domain ◽  
Domain Theory

Quantum Wells Coupled by Light Eigenmode Dynamics in Resonant Rayleigh Scattering

2000 ◽  
Vol 11 (12) ◽  
pp. 40
Author(s):  
Claudia Ell ◽  
Bernhard Grote ◽  
Galina Khitrova ◽  
Hyatt M. Gibbs ◽  
Stephan W. Koch ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Rayleigh Scattering

Early Time Evolution of Selective Oxidation in a CMnSi AHSS

2019 ◽  
Vol 50 (3) ◽  
pp. 1358-1369
Author(s):  
Mary E. Story ◽  
Bryan A. Webler
Keyword(s):  
Time Evolution ◽  
Selective Oxidation ◽  
Early Time

scholarly journals Early Time Evolution of Turbulence in the Space Environment by Neutral Beam Injection

2020 ◽  
Vol 125 (1) ◽  
Author(s):  
Alex C. Fletcher ◽  
Chris Crabtree ◽  
Joseph Huba ◽  
Gurudas Ganguli ◽  
Carl Siefring
Keyword(s):  
Time Evolution ◽  
Early Time ◽  
Neutral Beam Injection ◽  
Space Environment ◽  
Neutral Beam ◽  
Beam Injection

scholarly journals Resonant Rayleigh Scattering of Exciton-Polaritons in Multiple Quantum Wells

2000 ◽  
Vol 85 (3) ◽  
pp. 650-653 ◽  
Author(s):  
Guillaume Malpuech ◽  
Alexey Kavokin ◽  
Wolfgang Langbein ◽  
Jørn M. Hvam
Keyword(s):  
Quantum Wells ◽  
Rayleigh Scattering ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Exciton Polaritons
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