Tunable photonic crystals controlled by spin-crossover material in Terahertz range

E. Nguema (1) , E. Freysz (1) , J. F. Letard (2) , V. Vigneras (3) , L. Oyhenart (3) , Patrick Mounaix (1)

1 CPMOH - Centre de physique moléculaire optique et hertzienne
2 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
3 LPIOM - Laboratoire de physique des interactions ondes matières

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.

Mots clés: Photonic crystals; Optical control; Crystalline materials; Magnetic materials; Optical materials; Optical refraction; Frequency; Magnetic hysteresis; Dielectric materials; Absorption

Domaines: Optique [physics.optics]

E. Nguema, E. Freysz, J. F. Letard, V. Vigneras, L. Oyhenart, et al.. Tunable photonic crystals controlled by spin-crossover material in Terahertz range. Joint 32nd International Conference on Infrared and Millimeter Waves/15th International Conference on Terahertz Electronics, Sep 2007, Cardif, United Kingdom. pp.949-951, ⟨10.1109/ICIMW.2007.4516814⟩. ⟨hal-01553025⟩