Open Access�?herenkov phase-matched monochromatic THzwave generation using difference frequency generation with a lithium niobate crystal
Author(s) -
Koji Suizu,
Takayuki Sakamoto,
Tomoaki Akiba,
Toshihiro Tutui,
Chiko Otani,
Kodo Kawase
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.007493
Subject(s) - monochromatic color , lithium niobate , optics , materials science , terahertz radiation , energy conversion efficiency , crystal (programming language) , wavelength , nonlinear optics , sum frequency generation , phase (matter) , optoelectronics , physics , laser , quantum mechanics , computer science , programming language
We demonstrated a Cherenkov phase-matching method for monochromatic THz-wave generation using the difference frequency generation process with a lithium niobate crystal, which resulted in high conversion efficiency and wide tunability. We successfully generated monochromatic THz waves across the range 0.2-3.0 THz. We obtained efficient energy conversion in the low frequency region below 0.5 THz, and achieved a flat tuning spectrum by varying the pumping wavelength during THz-wave tuning.