Broadband terahertz wave generation from ridge waveguide

Author

Takeya, K. ; Fan, Shuang ; Takeuchi, H. ; Kawase, Kanta

Author_Institution

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

fYear

2013

fDate

1-6 Sept. 2013

Firstpage

1

Lastpage

2

Abstract

Cherenkov phase-matched terahertz (THz) wave generation from a MgO:LiNbO₃ ridge waveguide was studied using optical rectification. Time-domain spectroscopy (TDS) results showed a single-cycle pulse with femtosecond pulse pumping. The spectrum covered the range of 0.1 ~ 7 THz, with a signal-to-noise ratio of over 50 dB. The output power measured by a Si bolometer and a deuterated triglycine sulfate (DTGS) pyroelectric detector are shown and compared to that of a commercial photoconductive antenna (PCA). This system is believed to be a promising THz source for low-cost, compact, robust, and highly integrated TDS, THz imaging, and tomography systems.

Keywords

Cherenkov radiation; bolometers; lithium compounds; magnesium compounds; niobium compounds; pyroelectric detectors; ridge waveguides; terahertz wave generation; time-domain analysis; Cherenkov phase-matched THz wave generation; DTGS pyroelectric detector; MgO:LiNbO₃; PCA; TDS; THz imaging; THz source; broadband terahertz wave generation; deuterated triglycine sulfate pyroelectric detector; femtosecond pulse pumping; frequency 0.1 THz to 7 THz; optical rectification; photoconductive antenna; ridge waveguide; signal-to-noise ratio; silicon bolometer; single-cycle pulse; time-domain spectroscopy; tomography systems; Films; Indium tin oxide; Surface waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on

Conference_Location

Mainz

Type

conf

DOI

10.1109/IRMMW-THz.2013.6665512

Filename

6665512