【摘要】：全光銫(Cs)原子磁力儀是一種高靈敏度弱磁檢測裝置,核心器件Cs原子氣室中通常充入適量的緩沖氣體避免被極化原子擴(kuò)散至器壁引起壁碰撞弛豫,同時(shí)緩沖氣體壓強(qiáng)值將影響抽運(yùn)光的工作頻率。介紹了全光Cs原子磁力儀的工作原理,分析了Cs原子氣室中充入1.333×104Pa He緩沖氣體時(shí),抽運(yùn)光工作頻率對原子磁力儀靈敏度的影響,并采用速率方程計(jì)算了不同抽運(yùn)光頻率下的原子極化率。當(dāng)抽運(yùn)光頻率鎖定在Cs原子D1線F=3→F′=4共振線,檢測光頻率鎖定在Cs原子D2線F=4→F′=5共振線時(shí),原子磁力儀可達(dá)到最佳靈敏度。
[Abstract]:The all-optical cesium (Cs) atomic magnetometer is a kind of high sensitivity weak magnetic detection device. The core device Cs atomic gas chamber is usually filled with proper amount of buffer gas to avoid the wall collision relaxation caused by the diffusion of polarized atoms to the wall of the device. At the same time, the buffer gas pressure value will affect the working frequency of pumping light. The working principle of all-optical Cs atomic magnetometer is introduced, and the influence of pumping light working frequency on the sensitivity of atomic magnetometer when 1.333 脳 104Pa He buffer gas is filled into Cs atomic gas chamber is analyzed. The rate equation is used to calculate the atomic polarizability at different pumping frequencies. When the pumping light frequency is locked in the resonance line of Cs atomic D1 line F 鈮，

本文編號：2493979