Results 151 to 160 of about 482,948 (211)
Some of the next articles are maybe not open access.
Non-stationary pulses with complex-valued temporal degree of coherence
Journal of Optics, 2020It is shown that fine phase structuring of the temporal degree of coherence of a non-stationary pulse source leads to breaking its average arrival time symmetry on propagation in a linear dispersive medium.
Yongtao Zhang +3 more
openaire +2 more sources
Optics Letters, 2020
A field-portable, single-shot and very simple method is presented for measuring the full complex degree of coherence (CDC) of a quasi-monochromatic Schell-model field using the Fresnel diffraction from a phase discontinuity. To validate the proposed technique, the CDC of the light emitted from an incoherent source with variable size is investigated ...
Helia Hooshmand-Ziafi +2 more
openaire +3 more sources
A field-portable, single-shot and very simple method is presented for measuring the full complex degree of coherence (CDC) of a quasi-monochromatic Schell-model field using the Fresnel diffraction from a phase discontinuity. To validate the proposed technique, the CDC of the light emitted from an incoherent source with variable size is investigated ...
Helia Hooshmand-Ziafi +2 more
openaire +3 more sources
Complex degree of mutual coherence of biological liquids
SPIE Proceedings, 2013To characterize the degree of consistency of parameters of the optically uniaxial birefringent protein nets of blood plasma a new parameter – complex degree of mutual coherence (CDMC) is suggested. The technique of polarization measuring the coordinate distributions of the complex degree of mutual anisotropy of blood plasma is developed.
V. Ushenko
openaire +2 more sources
Complex degree of spatial coherence over a plane irradiated by quasi-monochromatic light sources
European Journal of Physics, 2020We revisit the concept of optical spatial coherence by considering the case of the complex degree of spatial coherence induced over a plane by a quasi-monochromatic irradiating source.
C. Ladera
openaire +2 more sources
Display of the complex degree of coherence due to quasi-monochromatic spatially incoherent sources
Optics Letters, 1985A method for displaying the complex degree of coherence (CDC) of a quasi-monochromatic spatially incoherent source is proposed. The phase of the CDC is encoded in a method similar to that used in interferometric imaging with incoherent light. The method is based on Fourier analysis of the speckle pattern that appears when a diffuser is illuminated with
M, Michalski, E E, Sicre, H J, Rabal
openaire +3 more sources
Physical Review Applied, 2020
We advance a protocol to measure the complex spatial degree of coherence of a partially coherent light field obeying Gaussian statistics through a generalized Hanbury Brown--Twiss (HBT) experiment. The proposed generalized HBT experiment amounts to combining a partially coherent field with a pair of coherent reference fields and measuring the intensity-
Zhaofeng Huang +4 more
openaire +2 more sources
We advance a protocol to measure the complex spatial degree of coherence of a partially coherent light field obeying Gaussian statistics through a generalized Hanbury Brown--Twiss (HBT) experiment. The proposed generalized HBT experiment amounts to combining a partially coherent field with a pair of coherent reference fields and measuring the intensity-
Zhaofeng Huang +4 more
openaire +2 more sources
Complex degree of coherence and power moments of cylindrical sinc Gaussian beam
Optics Communications, 2015Abstract Complex degree of coherence and power moment aspects of cylindrical sinc Gaussian beam are investigated. To do this, we have used the random phase screen approach. It is seen that on the source plane, cylindrical sinc Gaussian beam has zero on-axis intensity and the sidelobes resemble the sinc or the Gaussian profile depending on the ...
H. Eyyuboğlu
openaire +2 more sources
Definition and invariance properties of the complex degree of spatial coherence
Journal of the Optical Society of America A, 2009Within the framework of the phase-space representation of random electromagnetic fields provided by electromagnetic spatial coherence wavelets, and by using the Fresnel-Arago laws for interference and polarization as an analysis tool, the meaning of the spatial coherence-polarization tensor and its invariance under transformations is studied.
Román, Castañeda +2 more
openaire +3 more sources
Proposal for the determination of the complex degree of spatial coherence
Optics Letters, 1977With the help of a folded-wavefront type of interferometer, a sinusoidally phase-modulated wavefront can be superposed in parallel on another nonmodulated inverse wavefront. Spatial coherence is related to the fundamental and second-harmonic components of the modulation frequency included in the resultant intensity.
Y. Ohtsuka
openaire +3 more sources
Optics Letters, 2019
We study the effects of spatial unitary transformations on the complex degree of coherence and the visibility of intensity fringes in Young’s double pinhole interference setup with scalar light. We demonstrate that the degree of coherence and the visibility, in general, change in such transformations and may become zero for the output fields even when ...
Atri Halder, Ari T. Friberg
openaire +2 more sources
We study the effects of spatial unitary transformations on the complex degree of coherence and the visibility of intensity fringes in Young’s double pinhole interference setup with scalar light. We demonstrate that the degree of coherence and the visibility, in general, change in such transformations and may become zero for the output fields even when ...
Atri Halder, Ari T. Friberg
openaire +2 more sources