期刊
OPTICS EXPRESS
卷 31, 期 13, 页码 22092-22101出版社
Optica Publishing Group
DOI: 10.1364/OE.490215
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In this study, the absolute populations in all the 2p states in the diode-pumped metastable Ar laser were measured using tunable diode laser absorption spectroscopy and optical emission spectroscopy. The results showed that most atoms were populated to the 2p8, 2p9, and 2p10 levels while lasing, and the majority of the 2p9 population was efficiently transferred to the 2p10 level with the aid of helium, which was beneficial for the laser performance.
The complex excited energy levels in the diode-pumped metastable Ar laser may induce harmful effects in laser cycling. Significantly, the influence of the population distribution in 2p energy levels on the laser performance is unclear yet. In this work, the absolute populations in all the 2p states were measured online by the simultaneous applications of tunable diode laser absorption spectroscopy and optical emission spectroscopy. The results showed that most atoms were populated to the 2p8, 2p9, and 2p10 levels while lasing, and the majority of the 2p9 population was efficiently transferred to the 2p10 level with the aid of helium, which was beneficial for the laser performance.& COPY; 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
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