Now showing items 31-40 of 3975
Stopband tuning of TiO2 inverse opals for slow photon absorption
The effect of photonic photocatalysis was explored employing TiO 2 inverse opal structures. The degradation of methylene blue in aqueous phase was performed under visible light (λ = 450 nm) irradiation and showed an improved ...
Two-photon absorption spectrum of the photoinitiator Lucirin TPO-L
Two-photon absorption induced polymerization provides a powerful method for the fabrication of intricate three-dimensional microstructures. Recently, Lucirin TPO-L was shown to be a photoinitiator with several advantageous ...
Last Advances In Silicon-based Optical Biosensors
(MDPI AGBASEL, 2016)
Spectrum of quasi-equal energy electrons ejected by a high energy photon
We present numerical results for the photoelectron spectrum in double ionization by keV photons in the quasiequal-energy sharing region. In this region of the spectrum, the relevant ionizing mechanism is due to a mutual ...
Nonlinear absorption spectrum in perylene derivatives
Knowledge about nonlinear absorption spectra of materials used in photonic devices is of paramount importance in determining their optimum operation wavelengths. In this work, we have investigated the two-photon absorption ...
Testing color evaporation in photon-photon production of J/psi at CERN LEP II
(American Physical Soc, 2003-11-01)
The DELPHI Collaboration has recently reported the measurement of J/psi production in photon-photon collisions at CERN LEP II. These newly available data provide additional proof of the importance of colored c (c) over bar ...
Purity and entanglement of two-photon polarization states generated by spontaneous parametric down-conversion
(ELSEVIER SCIENCE BV, 2009)
We elucidate the dependence of purity and entanglement of two-photon states generated by spontaneous parametric down-conversion on the parameters of the source, such as crystal length, pump beam divergence, frequency ...
Microscopic theory of photonic band gaps in optical lattices
(Elsevier BVAmsterdam, 2014-02)
We propose a microscopic model to describe the scattering of light by atoms in optical lattices. The model is shown to efficiently capture Bragg scattering, spontaneous emission and photonic band gaps. A connection to the ...
Backside contact effect on the morphological and optical features of porous silicon photonic crystals
(ELSEVIER SCI LTD, 2009)
The present work reports on the effect of the type of backside contact used in the electrochemical process and their relation with the structural features and optical responses of the one-dimensional photonic crystal (PC) ...
Equivalence of many-photon Green's functions in the Duffin-Kemmer-Petiau and Klein-Gordon-Fock statistical quantum field theories
(Consultants Bureau, 2004-07-01)
Using the functional integral formalism for the statistical generating functional in the statistical (finite temperature) quantum field theory, we prove the equivalence of many-photon Greens functions in the Duffin-Kennner-Petiau ...