Yunchao Li, Xuwen Hu, Lu Zhang, Zhaojun Liu, Kaifang Zhang, Shihao Mou, Shubin Yan, Yanjun Zhang. Optimization of Buffer Gas Compositions in Atomic Vapor Cell for Coherent Population Trapping Atomic Clock[J]. Laser & Optoelectronics Progress, 2019, 56(12): 120201
- Laser & Optoelectronics Progress
- Vol. 56, Issue 12, 120201 (2019)
Fig. 1. r versus temperature
Fig. 2. Simulation results of temperature frequency shift for buffer gas. (a) Frequency shift of buffer gas mixture versus cell temperature; (b) temperature coefficient versus pressure ratio r of Ar-N2
Fig. 3. Principle diagram of frequency shift measurement in atomic vapor cell
Fig. 4. Frequency shift versus cell temperature under different r. (a) Cell 1, r= 0.5∶1; (b) Cell 2, r= 1∶1; (c) Cell 3, r=1.6∶1
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Table 1. Linear frequency shift coefficients and temperature coefficients for Rb atoms with different buffer gas compositions when T0=60 ℃
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