Results 271 to 280 of about 738,884 (296)
Some of the next articles are maybe not open access.
The scattering of photons by photons
Il Nuovo Cimento, 1965The general expressions for the five independent amplitudes of photon-photon scattering are given in a rather compact form. It has been shown in detail, in a previous paper (1), that this result is easily obtained for all the values of the energy and of the angle with the aid of the dispersion relations techniques.
openaire +2 more sources
Increasing the Efficiency of Ideal Solar Cells by Photon Induced Transitions at Intermediate Levels
, 1997Recent attempts have been made to increase the efficiency of solar cells by introducing an impurity level in the semiconductor band gap. We present an analysis of such a structure under ideal conditions.
A. Luque, A. Martí
semanticscholar +1 more source
1976
Experiments for the observations of processes involving photon-photon collisions are extremely difficult to perform, because they are crossed-beam experiments which require the highest intensities and the most sensitive detection equipment. For this reason the photon-photon cross sections are at the present time still of little interest to the ...
J. M. Jauch, F. Rohrlich
openaire +2 more sources
Experiments for the observations of processes involving photon-photon collisions are extremely difficult to perform, because they are crossed-beam experiments which require the highest intensities and the most sensitive detection equipment. For this reason the photon-photon cross sections are at the present time still of little interest to the ...
J. M. Jauch, F. Rohrlich
openaire +2 more sources
Strong Photon-Photon Correlations in Photonic Crystals
Frontiers in Optics 2007/Laser Science XXIII/Organic Materials and Devices for Displays and Energy Conversion, 2007We solve exactly two-photon transport in photonic-crystal waveguide coupled to a two-level system. Notable features include two-photon bound state that behaves as a composite particle, and effective attractive or repulsive interactions in space for photons.
Shanhui Fan, Jung-Tsung Shen
openaire +2 more sources
Two-photon absorption and the design of two-photon dyes.
Angewandte Chemie, 2009Two-photon absorption has important advantages over conventional one-photon absorption, which has led to applications in microscopy, microfabrication, three-dimensional data storage, optical power limiting, up-converted lasing, photodynamic therapy, and ...
Miłosz Pawlicki +3 more
semanticscholar +1 more source
Photon-plasmon-photon interaction
Physical Review A, 1991A theory of photon-plasmon-photon three-wave interaction is presented. An electromagnetic wave launched into the plasma turbulence interacts through the wave-particle interaction resulting in the emission of an electromagnetic wave with frequency up-shifted.
openaire +3 more sources
AIP Conference Proceedings, 1980
I review recent progress (mostly theoretical) in our knowledge of photon‐photon interactions at high energies, concentrating on resonance production and on reactions which expose the pointlike coupling of photons to quarks: deep inelastic scattering on a photon or electron target and γγ‐induced jet production at large transverse momentum.
openaire +2 more sources
I review recent progress (mostly theoretical) in our knowledge of photon‐photon interactions at high energies, concentrating on resonance production and on reactions which expose the pointlike coupling of photons to quarks: deep inelastic scattering on a photon or electron target and γγ‐induced jet production at large transverse momentum.
openaire +2 more sources
To Scatter a Photon by a Photon
American Journal of Physics, 1966This paper gives a more detailed description of the “x-ray-flashbulb” experiment for observing the scattering of light by light in vacuum. It is shown here that at least ten to twenty scattering events can be initiated by two x-ray flashbulbs, properly oriented and synchronized to flash together in an appropriate experimental arrangement.
openaire +2 more sources
Deep tissue two-photon microscopy
Nature Methods, 2005F. Helmchen, W. Denk
semanticscholar +1 more source
Effective photon theory and photon-photon scattering
Journal of Quantitative Spectroscopy and Radiative Transfer, 1981Abstract It is shown that the assumptions made by Eimerl in deriving the unusually high photon-photon scattering cross section from the effective photon theory of Panarella are unfounded.
openaire +2 more sources