Dr.Mahendra Kumar Maurya
Title
Electromagnetic field analysis of shielded composite dielectric spherical shell resonator in infrared and visible regions
Author(s)
,
Dr.Mahendra Kumar Maurya
Document Abstract
In this paper, we have presented an electromagnetic field analysis of shielded composite dielectric spheri-
cal shell resonator. The resonator studied in this work is considered for the first time as no study on such
resonators is available in the published literature to the best of the author’s information. This shielded
composite dielectric spherical shell resonator is composed of two concentric metal spheres with different
dielectric material has been made. The whole assembly is shielded by a perfectly conducting concentric
spherical metal. The expression for the resonant frequencies and quality factors have been calculated us-
ing numerical methods for both the TE nm and TM nm modes for an infrared and visible regions. It is found
that as the outer radius of the shielded composite dielectric spherical shell resonator increases, the qual-
ity factor Q of the resonator increases monotonically. It is also found that if we change the radius of
the inner dielectric sphere, there is no appreciable change in resonant frequency of the concerned mode
is observed. This is due to the small difference in the permittivities of the materials of the inner and
the outer dielectric spheres. It has also been observed that an inner concentric superconducting sphere
within a dielectric spherical resonator is a more effective controlling parameter of the resonant frequency
than the other parameters.
Rights :
D.P. Yadav a , M.K. Maurya b , ∗, R.A. Yadav