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Terahertz frequency metrology based on frequency comb techniques

T. Yasui,     The University of Tokushima, Japan

Abstract:

For a long time there has been a gap in frequency metrology in the terahertz (THz) region of the spectrum, between the optical and electrical regions, due to the lack of a frequency standard and traceability in this region. This chapter describes the concept of a new THz frequency metrology method based on a frequency comb, which is designed to fill this gap. Three techniques embodying the concept are also described: a THz-comb-referenced spectrum analyzer, an optical-comb-referenced THz synthesizer and a THz-comb-referenced spectrometer. Via coherent frequency linking among microwave, optical and THz waves, these ...

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