Open AccessEngineered nonlinear photonic quasicrystals for multi-frequency terahertz manipulation
Author(s) -
Yiqiang Qin,
Chao Zhang,
Daoben Zhu,
Yanyan Zhu,
Huifang Guo,
Guangjiun You,
S. H. Tang
Publication year - 2009
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.011558
Subject(s) - terahertz radiation , quasiperiodic function , fibonacci number , quasicrystal , superlattice , optics , photonic crystal , photonics , terahertz spectroscopy and technology , physics , electromagnetic radiation , fourier transform , terahertz gap , materials science , optoelectronics , condensed matter physics , far infrared laser , terahertz metamaterials , mathematics , discrete mathematics , quantum mechanics , laser
The interactions between electromagnetic wave and photonic quasicrystals are investigated. A terahertz (THz) source with multi-frequency modes in an optical LiTaO(3) superlattice produced by quasiperiodic (Fibonacci) domain-inverted ferroelectric material is demonstrated experimentally. Using the canonical pump-probe experimental technique, THz radiations in both forward and backward propagations are in-situ detected simultaneously. Four pronounced THz frequencies at 1.18, 0.78, 0.59 and 0.37 THz in Fourier transform spectrum are observed. The physical properties of THz waves inside quasiperiodic superlattice are discussed.