Open AccessHigh-speed terahertz spectroscopic imaging using noncollinear electro-optic sampling and a multistep mirror
Author(s) -
Kei Maruyama,
Norihiko Itani,
Shin Hasegawa,
S. Wakana
Publication year - 2011
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.19.017738
Subject(s) - terahertz radiation , optics , image resolution , materials science , beam (structure) , sampling (signal processing) , optical path , resolution (logic) , physics , optoelectronics , detector , artificial intelligence , computer science
We propose a method for high-speed terahertz spectroscopic imaging that is based on electro-optic sampling with a noncollinear geometry of the THz beam and probe laser beam and has a multistep mirror in the path of the probe beam. We made an imaging system that operates in the over 2.0-THz range and enables the sample region corresponding to a (28 × 28)-pixel area on the sensor to be imaged with a spatial resolution of 1.07 mm and a frequency resolution of 0.079 THz. We also show how the proposed method might be extended for faster THz spectroscopic imaging.