Title :
Electromagnetic Gaussian beam beyond the paraxial regime
Author :
Friberg, Ari T. ; Jaakkola, Tommi ; Tuovinen, Jussi
Author_Institution :
Helsinki Univ. of Technol., Espoo, Finland
fDate :
8/1/1992 12:00:00 AM
Abstract :
A modified electromagnetic beam technique is derived analytically from the asymptotic field expressions for the quasi-optical, millimeter-wave, plane polarized Laguerre-Gaussian modes of arbitrary order. The method makes use of the paraxial-wave formulas only, yet it accurately gives the full electric field vector at any point far beyond the conventional Gaussian beam regime. The technique is assessed numerically against the exact Green´s function results
Keywords :
electric fields; electromagnetic field theory; electromagnetic waves; Gaussian beam; Laguerre-Gaussian modes; asymptotic field expressions; electric field vector; exact Green´s function results; millimetre wave modes; modified electromagnetic beam technique; paraxial-wave formulas; plane polarised modes; quasi-optical modes; Beams; Electromagnetic analysis; Electromagnetic fields; Electromagnetic radiation; Electromagnetic wave polarization; Equations; Millimeter wave communication; Millimeter wave technology; Polynomials; Space technology;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
