frequency shift system中文什么意思

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The main works and results we have accomplished are as follows : 1 ) red - detuned locking of cooling / trapping laser to the cycling transition of cesium cooling has been accomplished by means of a double - passed acoustic - optical frequency shifting system and the technique of saturated absorption spectroscopy . the short - term residual frequency jitter is less than 350khz ; 2 ) automatic controlling system by computer programs has been established for laser cooling and trapping and cavity qed experiment . the laser and magnetic fields can be controlled by the acoustic - optical modulator and the electronic - controlled logic gate respectively
具體如下： 1 )采用了往返兩次通過的聲光頻移系統(tǒng)結(jié)合飽和吸收光譜技術(shù)的實驗方案，實現(xiàn)了冷卻俘獲激光頻率相對于銫原子冷卻循環(huán)躍遷的負失諧鎖定，短期頻率穩(wěn)定度約在350khz以內(nèi)，并可方便地調(diào)節(jié)其負失諧量而無須對后續(xù)光路再作調(diào)整； 2 )建立了一套基于計算機程序控制的、銫原子激光冷卻與俘獲實驗所需的時序控制系統(tǒng)。

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