Title :
Time-domain analysis of wavelength shift in a ZnTe slab due to electro-optic effect in THz
Author :
Mohamadi, Amin Soltani ; Shahabadi, Mahmoud
Author_Institution :
Photonics Res. Lab., Univ. of Tehran, Tehran, Iran
Abstract :
In this research, propagation of an optical signal through a ZnTe slab which shows electro-optic (EO) effect for terahertz frequencies is analyzed. We assume that the optical signal and the terahertz modulating signal are simultaneously present in the ZnTe slab. The slab is modeled by its nonlinear susceptibility in a one-dimensional Finite Difference Time Domain (FDTD) formulation. Using the FDTD analysis, we demonstrate that the optical signal will experience a frequency shift in the presence of the terahertz signal. The frequency shift predicted by this method of analysis is in agreement with a recently reported experiment.
Keywords :
II-VI semiconductors; electro-optical effects; finite difference time-domain analysis; microwave photonics; nonlinear optical susceptibility; optical materials; spectral line shift; terahertz waves; wide band gap semiconductors; zinc compounds; FDTD analysis; ZnTe; electro-optic effect; frequency shift; nonlinear susceptibility; one-dimensional finite difference time domain formulation; optical signal propagation; terahertz frequency; terahertz modulating signal; terahertz radiation; time-domain analysis; wavelength shift; Finite difference methods; Frequency; Nonlinear optics; Optical modulation; Optical propagation; Signal analysis; Slabs; Submillimeter wave propagation; Time domain analysis; Zinc compounds; Electro-Optic Effect; Nonlinear Finite-Difference Time-Domain Technique;
Conference_Titel :
Millimeter-Wave and Terahertz Technologies (MMWaTT), 2009 First Conference on
Conference_Location :
Tehran
Print_ISBN :
978-1-4244-6807-2
DOI :
10.1109/MMWATT.2009.5450460
