Temperature range and conditions of stable operation of gas-discharge rare-earth metal vapor lasers

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 (Al 2 O 3 -GDTs) were used in the experiments. The lasing appears at the temperature when the saturated-vapor pressure of REMs reach...

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Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2008-08, Vol.92 (2), p.225-227
Main Authors: Gerasimov, V.A., Gerasimov, V.V., Pavlinskiy, A.V.
Format: Article
Language:English
Subjects:
Aluminum oxide
Engineering
Excitation
Gadolinium
Lasers
Lasing
Neodymium
Optical Devices
Optics
Oxides
Photonics
Physical Chemistry
Physics
Physics and Astronomy
Quantum Optics
Rare earth metals
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Summary: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 (Al 2 O 3 -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 Ln n Al m O k and oxides Ln 2 O 3 on the inner surface of Al 2 O 3 -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.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-008-3090-7