Terahertz spectrum analyzer based on a terahertz frequency comb | Zendy

Shuko Yokoyama | Zendy; Ryotaro Nakamura | Zendy; Masaki Nose | Zendy; Tsutomu Araki | Zendy; Takeshi Yasui | Zendy

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Terahertz spectrum analyzer based on a terahertz frequency comb

Author(s) -

Shuko Yokoyama,

Ryotaro Nakamura,

Masaki Nose,

Tsutomu Araki,

Takeshi Yasui

Publication year - 2008

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.16.013052

Subject(s) - terahertz radiation , spectrum analyzer , metrology , optics , terahertz spectroscopy and technology , terahertz gap , frequency comb , photomixing , bandwidth (computing) , electromagnetic spectrum , physics , optoelectronics , materials science , far infrared laser , terahertz metamaterials , telecommunications , laser , computer science

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.

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