Results 41 to 50 of about 5,245,882 (320)

Measurement of Photon Statistics with Live Photoreceptor Cells

open access: yes, 2013
We analyzed the electrophysiological response of an isolated rod photoreceptor of Xenopus laevis under stimulation by coherent and pseudo-thermal light sources. Using the suction electrode technique for single cell recordings and a fiber optics setup for
C. Michael Jones   +9 more
core   +1 more source

Propagation of Correlation Singularities of a Partially Coherent Laguerre–Gaussian Electromagnetic Beam in a Uniaxial Crystal

open access: yesIEEE Photonics Journal, 2017
The correlation singularities of a partially coherent Laguerre–Gaussian (LG) electromagnetic beam in a uniaxial crystal is shown to possess interesting evolution behavior. The analytical formula for the cross-spectral density matrix of a partially
Yongtao Zhang, Liuzhan Pan, Yangjian Cai
doaj   +1 more source

Speckle noise and dynamic range in coronagraphic images [PDF]

open access: yes, 2007
This paper is concerned with the theoretical properties of high contrast coronagraphic images in the context of exoplanet searches. We derive and analyze the statistical properties of the residual starlight in coronagraphic images, and describe the ...
Andre Ferrari   +15 more
core   +1 more source

Statistical properties of the integrated Stokes parameters of polarization speckle or partially polarized thermal light.

open access: yesJournal of The Optical Society of America A-optics Image Science and Vision, 2023
The Stokes parameters, observables in physics, cannot be measured at an ideal point or at an instant in time. This paper is devoted to investigating the statistical properties of the integrated Stokes parameters in polarization speckle or partially ...
Wen Wang
semanticscholar   +1 more source

Statistically Correlating Laser-Induced Damage Performance with Photothermal Absorption for Fused Silica Optics in a High-Power Laser System

open access: yesPhotonics, 2022
Photothermal weak absorption is useful for the diagnosis of absorbing defects on the surface of fused silica optics in high-power lasers. However, how they relate to the laser-induced damage performance remains unclear, especially for a fused silica ...
Zhaohua Shi   +8 more
doaj   +1 more source

The Strehl Ratio in Adaptive Optics Images: Statistics and Estimation

open access: yes, 2007
Statistical properties of the intensity in adaptive optics images are usually modeled with a Rician distribution. We study the central point of the image, where this model is inappropriate for high to very high correction levels.
André Ferrari   +3 more
core   +1 more source

Propagation Properties of the Rectangular Multi-Gaussian Schell-Model Beams in Uniaxial Crystals Orthogonal to the Optical Axis

open access: yesIEEE Photonics Journal, 2017
A stochastic beam generated by a recently introduced source of Schell type with rectangular multi-Gaussian spectral degree of coherence is shown to posses interesting novel features on propagation in uniaxial crystals.
Yonghua Mao, Zhangrong Mei
doaj   +1 more source

The combined use of adaptive optics and nonlinear optical wavefront reversal techniques to compensate for turbulent distortions when focusing laser radiation on distant objects [PDF]

open access: yesКомпьютерная оптика, 2020
Approaches to constructing a mock-up of a system for focusing laser radiation on distant objects using both adaptive optics elements and nonlinear-optical wavefront reversal methods providing compensation for turbulent distortions are considered ...
V.P. Lukin   +4 more
doaj   +1 more source

Physics of quantum light emitters in disordered photonic nanostructures

open access: yes, 2017
Nanophotonics focuses on the control of light and the interaction with matter by the aid of intricate nanostructures. Typically, a photonic nanostructure is carefully designed for a specific application and any imperfections may reduce its performance, i.
García, Pedro David, Lodahl, Peter
core   +1 more source

Statistical Assessment of Open Optical Networks [PDF]

open access: yesPhotonics, 2019
In order to cope with the increase of the final user traffic, operators and vendors are pushing towards physical layer aware networking as a way to maximize the network capacity. To this aim, optical networks are becoming more and more open by exposing physical parameters enabling fast and reliable estimation of the lightpath quality of transmission ...
Virgillito E.   +3 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy