Title :
THz grating sensors for investigation of thin dielectric layers
Author :
Goebel, T. ; Schoenherr, D. ; Feiginov, M. ; Meissner, P. ; Hartnagel, H.L.
Author_Institution :
Inst. fuer Hochfrequenztechnik, Darmstadt
Abstract :
In this paper we analyze with both analytical calculations and numerical techniques the properties of the resonant features of such metal gratings sandwiched between thin dielectric films. The induced frequency shifts of the transmission resonances can allow the determination of the permittivity of the films. Further, we investigate for the first time how the sensitivity of the gratings (sensors) can be improved by different grating geometries.
Keywords :
dielectric thin films; optical sensors; permittivity; grating geometries; induced frequency shifts; metal gratings; permittivity; resonant features; terahertz grating sensors; thin dielectric films; transmission resonances; Conductive films; Dielectric films; Dielectric materials; Frequency; Geometry; Gratings; Optical films; Optical sensors; Permittivity; Resonance;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0931-0
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4386396
