TITLE:
Disorder Effect on the Transmission of Second Harmonic Waves in One-Dimensional Periodically Poled LiTaO3
AUTHORS:
Bahrami Omid, Baharvand Abdolrahim, Bahari Ali
KEYWORDS:
Transfer Matrix Method, Nonlinear Photonic Crystal, Random Binary Medium, Transmission Spectra, Disorder Effect, Second Harmonic Waves
JOURNAL NAME:
Journal of Modern Physics,
Vol.10 No.4,
March
19,
2019
ABSTRACT: One of the methods for calculating electromagnetic wave dispersion in multi-layer structures is the transfer matrix method. In this paper, we use the transfer matrix method for second harmonic generation in a nonlinear multilayer structure. The nonlinear photonic crystals investigated in this paper are as one-dimensional multi-layered structures including ferroelectric materials such as LiTaO3. Our goal is to investigate the effect of the disorder on the transmission spectrum of electromagnetic waves. Our results showed that positional disorder has different effects on the transmitting band and the gap band. The disorder in the transmitting band reduces the transmission coefficient of the waves and increases the transmission coefficient of the waves in the gap band. Such work has not yet been done on nonlinear photonic crystals producing the second harmonic.