Zeyang SONG, Lizhen LIANG, Shanhu LIU, Zhenhu TIAN, Jianglong WEI, Yongjian XU, Yahong XIE, Chundong HU. Design and research of Cs atomic concentration detection system based on laser absorption spectroscopy[J]. Chinese Journal of Quantum Electronics, 2024, 41(6): 852
- Chinese Journal of Quantum Electronics
- Vol. 41, Issue 6, 852 (2024)
Fig. 1. TDLAS measurement principle
Fig. 2. Second harmonic method measurement principle
Fig. 3. Schematic diagram of system composition
Fig. 4. Experimental system diagram. (a) Cesium vapor pool heating device; (b) Cesium vapor pool;(c) Optical path collimation; (d) Cs atomic concentration detection system
Fig. 5. (a) Spectra of laser at 25 oC and 40 oC; (b) Corresponding relationship between the output power of laser and the driving current
Fig. 6. Laser absorption and second harmonic signal
Fig. 7. Trend diagram of theoretical calculation results of Cs atomic concentration
Fig. 8. Actual trend diagram of Cs atomic concentration
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