Frequency accuracy and resolution of a GaP continuous-wave terahertz spectrometer

Tetsuo Sasaki, Tadao Tanabe, Jun Ichi Nishizawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

We have developed a wide frequency range tunable continuous-wave terahertz signal generator (CW THz SG) on the principle of difference frequency generation (DFG) via non-collinear phase matching in a gallium phosphide (GaP) crystal. The GaP CW THz SG has a wide frequency range, high accuracy, high stability and easy operation/maintenance. A spectrometer working as a continuous system was realized by combining the GaP CW THz SG as the light source with a superconducting transition edge sensor (TES) bolometer cooled by a pulse tube refrigerator. The frequency resolution and absolute accuracy of the newly developed frequency-stabilized GaP CW THz spectrometer was evaluated by measurements of water vapor absorption under vacuum. High accuracy spectral measurements for pharmaceuticals will be also presented.

Original languageEnglish
Title of host publication41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
PublisherIEEE Computer Society
ISBN (Electronic)9781467384858
DOIs
Publication statusPublished - 2016 Nov 28
Externally publishedYes
Event41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016 - Copenhagen, Denmark
Duration: 2016 Sep 252016 Sep 30

Publication series

NameInternational Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
Volume2016-November
ISSN (Print)2162-2027
ISSN (Electronic)2162-2035

Conference

Conference41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
CountryDenmark
CityCopenhagen
Period16/9/2516/9/30

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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  • Cite this

    Sasaki, T., Tanabe, T., & Nishizawa, J. I. (2016). Frequency accuracy and resolution of a GaP continuous-wave terahertz spectrometer. In 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016 [7758380] (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz; Vol. 2016-November). IEEE Computer Society. https://doi.org/10.1109/IRMMW-THz.2016.7758380