Terahertz spectrum analyzer based on a terahertz frequency comb

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...

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Published in:Optics express 2008-08, Vol.16 (17), p.13052-13061
Main Authors: Yokoyama, Shuko, Nakamura, Ryotaro, Nose, Masaki, Araki, Tsutomu, Yasui, Takeshi
Format: Article
Language:English
Subjects:
Equipment Design
Equipment Failure Analysis
Filtration - instrumentation
Microwaves
Spectrophotometry, Infrared - instrumentation
Spectrophotometry, Infrared - methods
Transducers
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cited_by cdi_FETCH-LOGICAL-c393t-54056e6a6dc4ab100f847c9f1217c504031d1afc72c130687232116877ddedb43
cites cdi_FETCH-LOGICAL-c393t-54056e6a6dc4ab100f847c9f1217c504031d1afc72c130687232116877ddedb43
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creator Yokoyama, Shuko
Nakamura, Ryotaro
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description 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.
doi_str_mv 10.1364/oe.16.013052
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subjects Equipment Design
Equipment Failure Analysis
Filtration - instrumentation
Microwaves
Spectrophotometry, Infrared - instrumentation
Spectrophotometry, Infrared - methods
Transducers
title Terahertz spectrum analyzer based on a terahertz frequency comb
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