Title :
Tunable materials and structures for the THz range
Author :
Kuzel, P. ; Fekete, L. ; Kadlec, F. ; Nemec, H.
Author_Institution :
Inst. of Phys., Acad. of Sci. of the Czech Republic, Prague
Abstract :
We demonstrate a concept of one-dimensional photonic crystals acting as modulators of terahertz radiation with an optical control. The devices are made from dielectric platelets and a semiconducting defect which leads to a defect level in the forbidden band gap. The transmittance at the defect level can then be controlled by photoexcitation of the semiconductor. We measure and discuss the dynamical response of these elements.
Keywords :
crystal defects; energy gap; optical control; optical materials; optical modulation; photoexcitation; photonic crystals; submillimetre waves; THz range; dielectric platelet; dynamical response; forbidden band gap; modulator; one-dimensional photonic crystal; optical control; semiconducting defect; semiconductor photoexcitation; tunable material; Crystalline materials; Dielectric devices; Dielectric materials; Lead compounds; Optical control; Optical materials; Optical modulation; Photonic crystals; Semiconductivity; Semiconductor materials;
Conference_Titel :
Applied Electromagnetics and Communications, 2007. ICECom 2007. 19th International Conference on
Conference_Location :
Dubrovnik
Print_ISBN :
978-953-6037-50-6
Electronic_ISBN :
978-953-6037-51-3
DOI :
10.1109/ICECOM.2007.4544438
