Title :
Modulation instability of terahertz electromagnetic pulses in SrTiO3 paraelectric
Author :
Rapoport, Yu.G. ; Grimalsky, V.V. ; Koshevaya, S.V. ; Melendez-Isidoro, D.L.
Author_Institution :
Phys. Fac., Nat. T. Shevchenko Univ., Kiev, Ukraine
Abstract :
It is investigated the modulation instability of terahertz electromagnetic waves in paraelectric crystals SrTiO3 at the temperatures 77 K. The cubic nonlinearity and the frequency dispersion correspond to the existence of bright envelope solitons and the modulation instability of long input pulses. The threshold of modulation instability can be reduced by reflection at the boundaries of the crystal. There is a possibility to generate the sequences of short terahertz pulses due to the modulation instability.
Keywords :
dielectric losses; dielectric materials; permittivity; strontium compounds; terahertz wave spectra; SrTiO3; bright envelope solitons; cubic nonlinearity; dielectric losses; dielectric permittivity; frequency dispersion; modulation instability; paraelectric crystals; temperature 77 K; terahertz electromagnetic pulses; terahertz electromagnetic waves; Crystals; Dielectrics; Dispersion; Microwave communication; Modulation; Permittivity; Reflection; dispersion and nonlinearity; modulation instability; strontium titanate; terahertz pulses;
Conference_Titel :
Electronics and Nanotechnology (ELNANO), 2015 IEEE 35th International Conference on
Conference_Location :
Kiev
DOI :
10.1109/ELNANO.2015.7146851
