Open AccessEnergy flow characteristics of vector X-Waves
Author(s) -
Mohamed A. Salem,
Hakan Bağcı
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.008526
Subject(s) - poynting vector , physics , energy flux , transverse plane , superposition principle , optics , transverse wave , polarization (electrochemistry) , energy current , plane wave , electromagnetic radiation , optical field , electric field , energy flow , magnetic field , wave propagation , energy (signal processing) , quantum mechanics , chemistry , structural engineering , engineering
The vector form of X-Waves is obtained as a superposition of transverse electric and transverse magnetic polarized field components. It is shown that the signs of all components of the Poynting vector can be locally changed using carefully chosen complex amplitudes of the transverse electric and transverse magnetic polarization components. Negative energy flux density in the longitudinal direction can be observed in a bounded region around the centroid; in this region the local behavior of the wave field is similar to that of wave field with negative energy flow. This peculiar energy flux phenomenon is of essential importance for electromagnetic and optical traps and tweezers, where the location and momenta of micro-and nanoparticles are manipulated by changing the Poynting vector, and in detection of invisibility cloaks.