Title :
Tunable photonic crystals controlled by spin-crossover material in Terahertz range
Author :
Nguema, E. ; Freysz, E. ; Létard, J. -F ; Vigneras, V. ; Oyhenart, L. ; Mounaix, P.
Author_Institution :
Univ. Bordeaux I, Talence
Abstract :
We use a spin crossover material as active defect inserted into a periodic structure of alternating layers of glass and air. By inducing the spin transition of the defect, a single defect mode of this Bragg filter designed for the submillimeter wavelength can be tuned over 15 GHz. This shows prospective applications of spin crossover materials at terahertz frequencies.
Keywords :
circuit tuning; microwave materials; photonic crystals; submillimetre wave filters; Bragg filter; active defect; periodic structure; spin transition; spin-crossover material; submillimeter wavelength; tunable photonic crystals; Absorption; Crystalline materials; Dielectric materials; Frequency; Magnetic hysteresis; Magnetic materials; Optical control; Optical materials; Optical refraction; Photonic crystals; photonic band gap; spectroscopy; spin crossover material; tunable filter;
Conference_Titel :
Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz. Joint 32nd International Conference on
Conference_Location :
Cardiff
Print_ISBN :
978-1-4244-1438-3
DOI :
10.1109/ICIMW.2007.4516814
