抽运光频率对全光Cs原子磁力仪灵敏度的影响
发布时间：2019-06-06 01:46
【摘要】：全光铯(Cs)原子磁力仪是一种高灵敏度弱磁检测装置,核心器件Cs原子气室中通常充入适量的缓冲气体避免被极化原子扩散至器壁引起壁碰撞弛豫,同时缓冲气体压强值将影响抽运光的工作频率。介绍了全光Cs原子磁力仪的工作原理,分析了Cs原子气室中充入1.333×104Pa He缓冲气体时,抽运光工作频率对原子磁力仪灵敏度的影响,并采用速率方程计算了不同抽运光频率下的原子极化率。当抽运光频率锁定在Cs原子D1线F=3→F′=4共振线,检测光频率锁定在Cs原子D2线F=4→F′=5共振线时,原子磁力仪可达到最佳灵敏度。
[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，
本文编号：2493979
[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，
本文编号：2493979
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