Current Status Of Terahertz Frequency Metrology At Nict
2016 Conference on Precision Electromagnetic Measurements (CPEM 2016)(2016)
摘要
NICT has commenced development of an accurate and stable frequency standard for THz frequency band. We succeeded in phase-locking a single-mode 3THz quantum cascade laser (THz-QCL) to a THz reference. Using the phase-locked THz-QCL and a hot electron bolometer mixer, a THz wave generated by photomixing was evaluated. The result showed that the phase-locked THz-QCL and the optically generated THz wave had the same sability as the microwave references at the 10-15 level and also that imposed noises during heterodyne mixing were negligibly small.
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关键词
Terahertz frequency metrology,frequency measurements,quantum cascade lasers,hot electron bolometer mixers,phase-locking
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