Open AccessFrequency-agile THz-wave generation and detection system using nonlinear frequency conversion at room temperature
Author(s) -
Ruixiang Guo,
Tomofumi Ikari,
Jun Zhang,
Hiroaki Minamide,
Hiromasa Ito
Publication year - 2010
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.18.016430
Subject(s) - terahertz radiation , optics , achromatic lens , laser linewidth , materials science , spectrometer , optoelectronics , terahertz spectroscopy and technology , nonlinear optics , laser , physics
A surface-emitting THz parametric oscillator is set up to generate a narrow-linewidth, nanosecond pulsed THz-wave radiation. The THz-wave radiation is coherently detected using the frequency up-conversion in MgO: LiNbO(3) crystal. Fast frequency tuning and automatic achromatic THz-wave detection are achieved through a special optical design, including a variable-angle mirror and 1:1 telescope devices in the pump and THz-wave beams. We demonstrate a frequency-agile THz-wave parametric generation and THz-wave coherent detection system. This system can be used as a frequency-domain THz-wave spectrometer operated at room-temperature, and there are a high possible to develop into a real-time two-dimensional THz spectral imaging system.