Modulation Instability of Terahertz Beams in Paraelectrics in a Wide Temperature Range

The nonlinear propagation of two-dimensional and three-dimensional terahertz electromagnetic beams in paralelectrics like SrTiO 3 is theoretically investigated in the temperature range T= 50 - 200 K. These beams are subject to the modulation instability that results in the formation of the sequence...

Full description

Saved in:
Bibliographic Details
Published in2020 IEEE Ukrainian Microwave Week (UkrMW) pp. 1014 - 1017
Main Authors Grimalsky, V., Koshevaya, S., Esobedo-Alatorre, J., Gomez-Badillo, Y., Rapoport, Yu
Format Conference Proceeding
LanguageEnglish
Published IEEE 21.09.2020
Subjects
Beams
Dispersion
Electromagnetics
Focusing
Frequency modulation
modulation instability
nonlinear paraelectrics
Temperature distribution
temperature range
THz waves
Online AccessGet full text

Cover

More Information
Summary:The nonlinear propagation of two-dimensional and three-dimensional terahertz electromagnetic beams in paralelectrics like SrTiO 3 is theoretically investigated in the temperature range T= 50 - 200 K. These beams are subject to the modulation instability that results in the formation of the sequence of short pulses from the long input envelope pulse. At smaller temperatures the nonlinearity behaves at smaller input amplitudes, whereas at higher temperatures the modulation instability can be observed at higher frequencies up till 1.5 THz. The initial focusing makes possible to reduce the input amplitudes for observing the modulation instability. Threedimensional beams are preferable for stable forming the sequences of picosecond envelope pulses.
DOI:10.1109/UkrMW49653.2020.9252663