Distribution of field amplitude fluctuations at the larger than unit relative variance of intensity fluctuations

2018 ◽  
Author(s):  
Valeriy V. Kolosov ◽  
Valerii P. Aksenov
Keyword(s):  
Field Amplitude ◽  
Relative Variance ◽  
Amplitude Fluctuations ◽  
Intensity Fluctuations

scholarly journals Minimum Total Noise in Wave-Mixing Processes

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Savita Gill ◽  
Sunil Rani ◽  
Nafa Singh
Keyword(s):  
Large Amplitude ◽  
Higher Order ◽  
Field Amplitude ◽  
Wave Mixing ◽  
Squeezed State ◽  
Nonclassical States ◽  
Mixing Processes ◽  
Amplitude Fluctuations ◽  
Total Noise ◽  
Field State

Higher-order squeezing in different optical processes such as seven-wave mixing and five-wave mixing has been studied. The total noise of a field state is a measure of the fluctuations of the field amplitude. It is shown that the minimum total noise (Tmin) of a higher-order squeezed state always increases with the increase in nonclassicality associated with higher-order squeezing. Thus, fromTmin, one can conclude that highly nonclassical states have large amplitude fluctuations.

Relative variance preferences in a choice-among-bets paradigm.

1973 ◽  
Author(s):  
Raymond C. Seghers ◽  
Dennis G. Fryback ◽  
Barbara C. Goodman
Keyword(s):  
Relative Variance

Light Scattering Intensity Fluctuations in Microdroplets Containing Inclusions.

1997 ◽  
Author(s):  
Gorden Videen ◽  
Paul Pellegrino ◽  
Dat Ngo ◽  
John S. Videen ◽  
Ronald G. Pinnick
Keyword(s):  
Light Scattering ◽  
Scattering Intensity ◽  
Light Scattering Intensity ◽  
Intensity Fluctuations

Interferential seeing monitor, a seeing monitor for atmospheric turbulence studies: calibration with the differential image motion monitor

2020 ◽  
Vol 500 (2) ◽  
pp. 1884-1888
Author(s):  
Mohammed Sabil ◽  
A Habib ◽  
Z Benkhaldoun
Keyword(s):  
Structure Function ◽  
Atmospheric Turbulence ◽  
Wave Structure ◽  
Image Motion ◽  
Phase Fluctuations ◽  
Amplitude Fluctuations ◽  
Focus Plane ◽  
Cross Calibration ◽  
Double Slit ◽  
Good Agreement

ABSTRACT In this work, we aim to calibrate an interferential seeing monitor (ISM), which is a testing instument used at astronomical sites. Its method is based on the study of the diffraction pattern produced by a Young’s double-slit at the focus plane of a telescope. This method allows us to obtain the wave structure function by taking into account both phase and amplitude fluctuations of the light wavefront. A phase seeing εϕ was assigned to phase fluctuations and an amplitude seeing εχ was assigned to amplitude fluctuations (scintillation phenomenon), which allows us to obtain both phase and amplitude fluctuations. The feasibility of the ISM method was demonstrated by numerical simulations presented in a previous work. In this work, we have conducted a cross-calibration campaign of the ISM with a differential image motion monitor (DIMM) over 16 nights at the Oukaimeden and Atlas Golf Marrakech Observatories. The goal of this campaign was to study the reliability of this new method. In this paper, we present the calibration measurements and a comparison between the seeing measured by the ISM (εϕ, εχ) and that obtained by the DIMM (εdimm). These results show good agreement between the phase- eeing εϕ and εdimm.

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