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): 304001
- Chinese Journal of Lasers
- Vol. 47, Issue 3, 304001 (2020)
Fig. 1. Schematic of the experimental apparatus
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
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
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 ℃
Fig. 5. Relationship between the resonance linewidths (the amplitudes) of FID signals and the pump laser
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 ℃
Fig. 7. Relationship between the resonance linewidth and the magnetic field
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Table 1. Linewidths caused by destructive collisions of atoms at different temperatures
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