RT Journal Article
ID 1618c49863e4d968
A1 Gurin, O. V.
A1 Degtyarev, А. V. 
A1 Maslov, V. A.
A1 Ryabykh, V. N. 
A1 Topkov, А. V. 
T1 TERAHERTZ LASER WAVEGUIDE RESONATORS WITH INTERNAL SPHERICAL MIRRORS
JF Telecommunications and Radio Engineering
JO TRE
YR 2016
FD 2017-02-16
VO 75
IS 18
SP 1665
OP 1677
K1 waveguide laser
K1 spherical mirrors
K1 terahertz band
K1 power loss
K1 mode composition
AB Open and waveguide resonators got wide application for creation of resonant systems of the infrared and terahertz lasers. The terahertz laser waveguide resonators use internal mirrors
and, at availability of the curvature therein, higher waveguide modes may exert a strong influence upon the type of the output radiation. However, the influence of quadrature phase
aberrations upon the characteristics of radiation of the waveguide quasi-optical resonators is not studied in the reference literature practically. It is known only the analytical consideration of electrodynamics of the waveguide resonators in the case of small curvature of the mirrors.
This paper represents the results of theoretical and experimental studies of the influence exerted
by the spherical mirrors of an arbitrary curvature radius of the HCN laser dielectric waveguide resonator (<i>&lambda;</i> &#61; 0.337 mm) upon the power loss and mode composition of the radiation. Availability of three typical domains of geometrical parameters - the waveguide, the quasi-optical and the unstable ones - is demonstrated. The obtained results allow using them at selection of geometrical parameters of the laser resonant systems; they can also be applied to optimization of power characteristics of the terahertz waveguide lasers.

PB Begell House
LK https://www.dl.begellhouse.com/journals/0632a9d54950b268,04a7c6393b5e429f,1618c49863e4d968.html