[1] Xie Y H, Hu C D, Wei J L et al. Conceptual design of negative ion based beam source for CFETR neutral beam injector[J]. Nuclear Fusion and Plasma Physics, 41, 628-634(2021).

[2] Wang H M, Hu C D, Chen S Y et al. Experimental study on the effect of cesium injection on negative ion yield of high power negative ion source[J]. Nuclear Techniques, 44, 91-96(2021).

[3] Cao R, Kang X W, Fu M et al. A fast fitting method for gas concentration measurement based on TDLAS technology[J]. Chinese Journal of Sensors and Actuators, 33, 232-237(2020).

[4] Liu J, Dong Y, Gu M S et al. Development of inhaled portable methane detector based on TDLAS technique[J]. Chinese Journal of Quantum Electronics, 36, 521-527(2019).

[5] Chen H, Ju Y, Han L et al. Effects of temperature of laser shell on background signals for trace gas detection in TDLAS[J]. Spectroscopy and Spectral Analysis, 38, 1670-1674(2018).

[6] Xing K M, Yang K, Zhang L et al. Simultaneous detection of CO and CO2 in cigarette mainstream smoke based on TDLAS technology[J]. Chinese Journal of Quantum Electronics, 34, 81-87(2017).

[7] Pei Q B, Yan W C, Shen C et al. Study on dew point measurement of natural gas based on tunable semiconductor laser absorption spectrometry[J]. Acta Metrologica Sinica, 42, 117-122(2021).

[8] Sansonetti J E. Wavelengths, transition probabilities, and energy levels for the spectra of cesium (CsI-CsLV)[J]. Journal of Physical and Chemical Reference Data, 38, 761-923(2009).

[9] Chang H, Li L P, Zhang J X. Simplfication of Cs saturated-absorption spectroscopy setupand its spectra observation[J]. Acta Sinica Quantum Optica, 7, 135-138(2001).

[10] Fantz U, Wimmer C. Optimizing the laser absorption technique for quantification of caesium densities in negative hydrogen ion sources[J]. Journal of Physics D: Applied Physics, 44, 335202(2011).

[11] Que Y Q. Study on Detection of Rubidium Vapor Density Based on DBR Diode Laser[D](2013).

[12] Alcock C B, Itkin V P, Horrigan M K. Vapour pressure equations for the metallic elements: 298-2500K[J]. Canadian Metallurgical Quarterly, 23, 309-313(1984).

[13] He J J, Song C, Luo Q W et al. EWT-ASG: Empirical wavelet transform with adaptive savitzky-golay filtering for TDLAS[J]. IEEE Photonics Journal, 12, 7800712(2020).

[14] Li C G, Dong L, Wang Y D et al. Compact mid-infrared trace gas detection system based on TDLAS and ICL[J]. Optics and Precision Engineering, 26, 1855-1861(2018).

[15] Liu L F, Feng Y X, Chen D et al. Trace acetylene detection based on mid-infrared laser absorption spectroscopy technology[J]. Chinese Journal of Quantum Electronics, 38, 648-660(2021).