121 citations · 245 across the 6 of their papers we have counts for
6 papers
Solenoidality of a Magnetic Induction Field and Conservation of Total Momentum
Sergio Severini, Alessandro Settimi
This scientific essay proposes to discuss the physical aspects of a system consisting of some non-relativistic massive charged particles, that are the sources in motion of an elect…
Classical and Quantum Approach of Quasi Normal Modes in Linear Optical Regime: An Application to One Dimensional Photonic Crystals
A. Settimi
The definition of natural modes for confined structures is one of the central problems in physics, as in nuclear physics, astrophysics, etc. The main problem is due to the boundary…
Linking the Quasi-Normal and Natural Modes of an open cavity
A. Settimi, S. Severini
The present paper proposes a comparison between the extinction theorem and the Sturm-Liouville theory approaches for calculating the e.m. field inside an optical cavity. We discuss…
Which group velocity of light in a dispersive medium?
Omar El Gawhary, Sergio Severini, Paolo Christillin
The interaction between a light pulse, traveling in air, and a generic linear, non-absorbing and dispersive structure is analyzed. It is shown that energy conservation imposes a co…
Quasi Normal Modes description of transmission properties for Photonic Band Gap structures
A. Settimi, S. Severini, B. J. Hoenders
In this paper, we use the 'Quasi Normal Modes' (QNM) approach for discussing the transmission properties of double-side opened optical cavities: in particular, this approach is spe…
Lorentz Beams
Omar El Gawhary, Sergio Severini
A new kind of tridimensional scalar optical beams is introduced. These beams are called Lorentz beams because the form of their transverse pattern in the source plane is the produc…