中国激光, 2020, 47 (3): 0304001, 网络出版: 2020-03-12
基于原子自由进动的光缩效应实验研究 
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Experimental Demonstration of Light Narrowing Effect Based on Free Atomic Spin Precession
图 & 表
图 2. 87Rb原子基态和第一激发态的能级简图及其在泵浦过程中产生的选择跃迁。(a)能级简图;(b) 选择跃迁
Fig. 2. Energy level splitting diagram of the ground state and first excited state of atom 87Rb and its selective transitions in the pumping process. (a) Energy level splitting; (b)selective transitions
图 3. 时序及单次FID信号。(a) 单次采样周期的信号以及对应的泵浦光和射频脉冲的时序;(b)信号拟合结果
Fig. 3. Timing and FID signal in a single sampling period. (a) Signal of a single sampling period and the corresponding timing of pumping light and RF pulse; (b) one signal fitting result
图 4. 不同泵浦光功率下的原子磁共振谱
Fig. 4. Atomic magnetic resonance spectra at different pump powersintensities at different temperatures with the magnetic field of 1000 nT. (a) 90 ℃; (b) 100 ℃; (c) 110 ℃; (d) 120 ℃
图 5. 1000 nT磁场中,在不同温度下,实验测得共振线宽和FID信号幅度与泵浦光强度之间的关系。(a) 90 ℃;(b) 100 ℃;(c) 110 ℃;(d) 120 ℃
Fig. 5. Relationship between the resonance linewidths (the amplitudes) of FID signals and the pump laser
图 6. 1000 nT磁场中,在不同温度下,实验测得共振线宽与FID信号幅度之间的关系。(a) 90 ℃;(b) 100 ℃;(c) 110 ℃;(d) 120 ℃
Fig. 6. Relationship between the resonance linewidths and the amplitudes of FID signals at different temperatures with the magnetic field of 1000 nT. (a) 90 ℃; (b) 100 ℃; (c) 110 ℃; (d) 120 ℃
表 1不同温度下,由原子破坏性碰撞导致的展宽
Table1. Linewidths caused by destructive collisions of atoms at different temperatures
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郑文强, 毕欣, 章国亿, 苏圣然, 李劲松, 林强. 基于原子自由进动的光缩效应实验研究[J]. 中国激光, 2020, 47(3): 0304001. Zheng Wenqiang, Bi Xin, Zhang Guoyi, Su Shengran, Li Jingsong, Lin Qiang. Experimental Demonstration of Light Narrowing Effect Based on Free Atomic Spin Precession[J]. Chinese Journal of Lasers, 2020, 47(3): 0304001.
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