一般注記Accurate measurement of gyrotron frequency has been carried out using a far-infrared (FIR) molecular laser as a reference. Highly stable operation of a FIR laser enables us to make the resolution of frequency measurement so high that both the frequency width Δ? and the frequency fluctuation level б? can be studied within the accuracy of 1 kHz or less. When our submillimeter wave gyrotron operates in cw mode, the observed frequency width Δ? is around 2 kHz and the fluctuation level б? 10 kHz. Such an accurate measurement is a useful tool for development of high quality gyrotrons with stable frequency.
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)