3,144 research outputs found
Theory of a Directive Optical Leaky Wave Antenna Integrated into a Resonator and Enhancement of Radiation Control
We provide for the first time the detailed study of the radiation performance
of an optical leaky wave antenna (OLWA) integrated into a Fabry-P\'erot
resonator. We show that the radiation pattern can be expressed as the one
generated by the interference of two leaky waves counter-propagating in the
resonator leading to a design procedure for achieving optimized broadside
radiation, i.e., normal to the waveguide axis. We thus report a realizable
implementation of the OLWA made of semiconductor and dielectric regions. The
theoretical modeling is supported by full-wave simulation results, which are
found to be in good agreement. We aim to control the radiation intensity in the
broadside direction via excess carrier generation in the semiconductor regions.
We show that the presence of the resonator can provide an effective way of
enhancing the radiation level modulation, which reaches values as high as 13.5
dB, paving the way for novel promising control capabilities that might allow
the generation of very fast optical switches, as an example.Comment: 10 pages, 14 figure
A New Inspiration: A Senior Recital
This is the Senior Musical Theatre Recital of Sammy Campione held on March 11, 2022, in the Mabee Recital Hall
Revolution of the right: explaining the rise of the front national in light of the 2008 financial crisis
This thesis aims to unpack the reasons for the surge in popular support for the far right Populist Party in France, the Front National. The research is conducted according to the methodology that there are three main contributions to the surge, including economic factors, political factors and social issues. Each chapter is dedicated to exploring one of these contributions through the analysis of data such as political polls, economic statistics and public opinion. The main outcomes of the research are Marine Le Pen has been overall successful in moving the Front National from the fray to the mainstream of French politics, and the political situation in France is particularly volatile due to the economic mismanagement during the financial crisis of 2008, so it was more susceptible to growing strength of a far right party
Evaluating Return on Investment in the MLB Rule IV Draft
Every June, the 30 clubs of Major League Baseball gather on a conference call to select amateur players from high school and college into their organization. These players may be position players or pitchers, and when selected, the players are awarded a signing bonus to entice them to join the organization. Using regression techniques and statistical tests, position players will be compared to pitchers as well as high school players to college players in terms of return on investment. First multiple regression techniques are used to develop a model to determine what a player\u27s value is to his team based off of his marginal revenue product (MRP). This value is then compared to yearly compensation including initial signing bonus for the player\u27s pre-arbitration seasons. The difference in total MRP and total compensation formulate a return on investment. These distributions of returns on investment are compared by group using a Kolmogorov-Smirnov procedure. When performed, it is found that there is no statistical difference in return by position outside of a rare exception in 2005 where position players significantly outperformed pitchers in the first round. There is statistical evidence suggesting college players return higher returns on investment on average than high school players in all rounds, but when broken down by position, the significance only holds for infielders and outfielders
Low-damping epsilon-near-zero slabs: nonlinear and nonlocal optical properties
We investigate second harmonic generation, low-threshold multistability,
all-optical switching, and inherently nonlocal effects due to the free-electron
gas pressure in an epsilon-near-zero (ENZ) metamaterial slab made of
cylindrical, plasmonic nanoshells illuminated by TM-polarized light. Damping
compensation in the ENZ frequency region, achieved by using gain medium inside
the shells' dielectric cores, enhances the nonlinear properties. Reflection is
inhibited and the electric field component normal to the slab interface is
enhanced near the effective pseudo-Brewster angle, where the effective
\epsilon-near-zero condition triggers a non-resonant, impedance-matching
phenomenon. We show that the slab displays a strong effective, spatial
nonlocality associated with leaky modes that are mediated by the compensation
of damping. The presence of these leaky modes then induces further spectral and
angular conditions where the local fields are enhanced, thus opening new
windows of opportunity for the enhancement of nonlinear optical processes
- …