Temperature range and conditions of stable operation of gas-discharge rare-earth metal vapor lasers |
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| Authors: | V.A. Gerasimov V.V. Gerasimov A.V. Pavlinskiy |
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| Affiliation: | (1) Zuev Institute of Atmospheric Optics, Siberian Branch of the Russian Academy of Sciences, 1, Akademichesky Av., Tomsk, 634055, Russia;(2) Department of Physics, Tomsk State University, 36, Lenin Av., Tomsk, 634050, Russia;(3) Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, 2/3, Akademichesky Av., Tomsk, 634055, Russia |
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| Abstract: | We have experimentally studied the temperature range and conditions of the stable operation of rare-earth metal (REM) vapor lasers. Gas-discharge tubes made of alumina (Al2O3-GDTs) were used in the experiments. The lasing appears at the temperature when the saturated-vapor pressure of REMs reaches the value of 0.1 Torr and abruptly drops at the melting temperature of corresponding REM under any excitation conditions. The necessity of protecting film of REM aluminates LnnAlmOk and oxides Ln2O3 on the inner surface of Al2O3-GDT for stable operation of these lasers is shown. An explanation of lasing impossibility in vapors of cerium (Ce), praseodymium (Pr), neodymium (Nd), gadolinium (Gd), and terbium (Tb) under gas-discharge excitation is proposed. PACS 42.55.Lt; 34.10.+x |
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