Terahertz spectrum analyzer based on a terahertz frequency comb

Optics Express
Shuko YokoyamaTakeshi Yasui

Abstract

Precision frequency measurements of terahertz (THz) waves are required to establish metrology in the THz spectral region. However, frequency measurement techniques in this region are immature. We propose a THz spectrum analyzer to measure the absolute frequency and spectral shape of continuous-wave THz waves. Based on a stable frequency comb generated in a photoconductive antenna, the absolute frequency of a sub- THz test source was determined at a precision of 2.8 x 10(-11). Furthermore, the spectral bandwidth of the THz spectrum analyzer can be extended over 1 THz, as demonstrated by measurement of a THz test source. This spectrum analyzer has the potential to become a powerful tool for THz frequency metrology.

References

Mar 15, 2002·Nature·Th UdemT W Hänsch
May 10, 2002·Nature·Rüdeger KöhlerFausto Rossi

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Citations

Jun 7, 2011·The Review of Scientific Instruments·Kengo MurasawaTakehiko Hidaka
Aug 4, 2010·Optics Letters·Dae-Su YeeDae-Cheol Seo
Jan 22, 2015·Optics Express·A S SkrylM I Bakunov
Jul 26, 2018·Scientific Reports·Guoqing HuTakeshi Yasui

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