Results 21 to 30 of about 14,728 (161)

Studying the Double Rayleigh Backscattering Noise Effect on Fiber-Optic Radio Frequency Transfer

open access: yesIEEE Photonics Journal, 2021
We report the effect of the double Rayleigh backscattering (DRB) noise, in which the interference of the signal light with the double Rayleigh backscattered light, on the fiber-optic radio-frequency (RF) transfer system.
Qi Li   +3 more
doaj   +1 more source

High-Frequency Volume and Boundary Acoustic Backscatter Fluctuations in Shallow Water [PDF]

open access: yes, 2003
Volume and boundary acoustic backscatter envelope fluctuations are characterized from data collected by the Toroidal Volume Search Sonar (TVSS), a 68 kHz cylindrical array capable of 360° multibeam imaging in the vertical plane perpendicular to its axis.
de Moustier, Christian   +1 more
core   +2 more sources

Phase diagram and phonon-induced backscattering in topological insulator nanowires [PDF]

open access: yes, 2020
We present an effective low-energy theory of electron-phonon coupling effects for clean cylindrical topological insulator nanowires. Acoustic phonons are modelled by isotropic elastic continuum theory with stress-free boundary conditions.
De Martino, A., Dorn, K., Egger, R.
core   +2 more sources

Backscattering Statistics of Indoor Full-Polarization Scatterometric and Synthetic Aperture Radar Measurements of a Rice Field

open access: yesRemote Sensing, 2023
The backscattering coefficient σ0 of a rice field is closely related to the amplitude, power, and phase of its radar backscattered signals. An investigation of the statistics of indoor full-polarization scatterometric and synthetic aperture radar (SAR ...
Xiangchen Liu   +5 more
doaj   +1 more source

A new lidar inversion method using a surface reference target applied to the backscattering coefficient and lidar ratio retrievals of a fog-oil plume at short range [PDF]

open access: yesAtmospheric Measurement Techniques, 2020
In this paper, a new elastic lidar inversion equation is presented. It is based on the backscattering signal from a surface reference target (SRT) rather than that from a volumetric layer of reference (Rayleigh molecular scatterer) as is usually done ...
F. Gaudfrin   +6 more
doaj   +1 more source

Joint Elastic Side-Scattering Lidar and Raman Lidar Measurements of Aerosol Optical Properties in South East Colorado [PDF]

open access: yes, 2017
We describe an experiment, located in south-east Colorado, USA, that measured aerosol optical depth profiles using two Lidar techniques. Two independent detectors measured scattered light from a vertical UV laser beam.
Allen, C.   +29 more
core   +3 more sources

Determining the contribution of volcanic ash and boundary layer aerosol in backscatter lidar returns: a three‐component atmosphere approach [PDF]

open access: yes, 2011
A solution of the lidar equation is discussed, that permits combining backscatter and depolarization measurements to quantitatively distinguish two different aerosol types with different depolarization properties.
Hogan, Robin, Marenco, Franco
core   +1 more source

Advances in atmospheric temperature profile measurements using high spectral resolution lidar

open access: yesEPJ Web of Conferences, 2018
This paper reports the atmospheric temperature profile measurements using a University of Wisconsin-Madison High Spectral Resolution Lidar (HSRL) and describes improvements in the instrument performance.
Razenkov Ilya I., Eloranta Edwin W.
doaj   +1 more source

The development of biomolecular Raman optical activity spectroscopy [PDF]

open access: yes, 2015
Following its first observation over 40 years ago, Raman optical activity (ROA), which may be measured as a small difference in the intensity of vibrational Raman scattering from chiral molecules in right- and left-circularly polarized incident light or,
Barron, Laurence D.
core   +1 more source

A Selectable Single-Mode Erbium Fiber Laser With Mach-Zehnder Interferometer and Rayleigh Injection Scheme

open access: yesIEEE Photonics Journal, 2022
In the paper, a hybrid Mach-Zehnder interferometer (MZI) and Rayleigh backscattering (RB) injection is designed and applied in the erbium-doped fiber (EDF) ring laser configuration.
Chien-Hung Yeh   +4 more
doaj   +1 more source

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