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An accurate, continuously tunable, terahertz synthesizer was proposed by photomixing of two continuous-wave lasers phase-locked to dual optical combs. This synthesizer enables us to perform the precise THz spectroscopy secured by microwave frequency standard.
A continuously tunable, phase-locked, THz synthesizer has been demonstrated. This THz synthesizer is based on photomixing of two optical frequency synthesizers composed of CW laser and optical comb, and its output frequency has the same uncertainty as that of a microwave frequency standard used.
A new method for precise frequency measurement of continuous-wave THz wave is proposed by using a THz frequency comb of photocurrent. Precision of the frequency measurement was 2.2??10-11 within the range of 75-110 GHz.
A new method for precise frequency measurement of continuous-wave terahertz (THz) wave is proposed by using a THz frequency comb of photocurrent in a photoconductive antenna for THz detection. Effectiveness of the proposed method is demonstrated by measurement of a test source. Precision of the frequency measurement was 2.2times10-11 within the range of 75-110 GHz.
We proposed a new method of THz frequency measurement referring to as THz frequency comb. Effectiveness of the proposed method is demonstrated by measurement of a 100-GHz test source. The achieved precision and signal-to-noise ratio of frequency measurement were 2.85times10-11 and 46.2 dB, respectively.
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