Title :
Spatial-energy field characteristics for symmetric modes of metallic waveguide resonator of terahertz laser
Author :
Gurin, O.V. ; Degtyarev, A.V. ; Maslov, V.A. ; Senyuta, V.S. ; Svich, V.A. ; Topkov, A.N.
Author_Institution :
Dept. of the Quantum Radiophys., V.Karazin Kharkov Nat. Univ., Kharkiv, Ukraine
Abstract :
Theoretical and experimental comparison of the divergence of TE01 mode and Gaussian beam can be concluded that the obtained analytical expressions in nonparaxial approximation correctly describe the propagation of waveguide modes in free space. Stable structure of the field for the symmetric waveguide modes in the terahertz range is observed at shorter distances, unlike the distances predicted by the well-known Rayleigh criterion for the far-field diffraction.
Keywords :
Gaussian processes; approximation theory; resonators; submillimetre wave lasers; Gaussian beam; Rayleigh criterion; TE01 mode; analytical expressions; far-field diffraction; metallic waveguide resonator; nonparaxial approximation; spatial-energy field characteristics; symmetric modes; symmetric waveguide modes; terahertz laser; terahertz range; waveguide mode propagation; Laser beams; Laser excitation; Laser modes; Measurement by laser beam; Optical waveguides; Planar waveguides; Waveguide lasers;
Conference_Titel :
Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW), 2013 International Kharkov Symposium on
Conference_Location :
Kharkiv
Print_ISBN :
978-1-4799-1066-3
DOI :
10.1109/MSMW.2013.6622183
