A High Dynamic Range and Spectrally Flat Terahertz Spectrometer Based on Optical Parametric Processes in LiNbO $_{3}$

Author

Murate, Kosuke ; Taira, Yoichi ; Tripathi, Saroj R. ; Hayashi, Shin´ichiro ; Nawata, Koji ; Minamide, Hiroaki ; Kawase, Kanta

Author_Institution

Dept. of Electr. Eng., Nagoya Univ., Nagoya, Japan

Volume

4

Issue

4

fYear

2014

fDate

Jul-14

Firstpage

523

Lastpage

526

Abstract

A wideband, wavelength tunable, spectrally flat terahertz (THz) spectrometer with a dynamic range in excess of 70 dB was demonstrated. The emission of THz-wave was achieved using an injection-seeded THz parametric generator (is-TPG), and detection was achieved using nonlinear optical wavelength conversion, both in magnesium-oxide-doped lithium niobate crystal. This system has potential applications in non-destructive sensing and imaging of a wide variety of materials.

Keywords

lithium compounds; magnesium; optical wavelength conversion; terahertz spectroscopy; terahertz wave detectors; terahertz wave generation; LiNbO₃:Mg; THz detection; high dynamic range spectrometer; injection seeded THz parametric generator; is-TPG; nondestructive sensing; nonlinear optical wavelength conversion; optical parametric process; spectrally flat terahertz spectrometer; Crystals; Detectors; Dynamic range; Laser beams; Nonlinear optics; Optical pumping; Terahertz (THz); parametric process; spectrometer;

fLanguage

English

Journal_Title

Terahertz Science and Technology, IEEE Transactions on

Publisher

ieee

ISSN

2156-342X

Type

jour

DOI

10.1109/TTHZ.2014.2326298

Filename

6827984