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Transverse optical pumping of e-beam excited high-pressure He/Ar mixture with a laser diode array
Author(s): Andrey Ionin; Aleksandr Drakin; Igor Kholin; Andrey L'dov; Gevork Mikaelyan; Dmitriy Sinitsin; Nikolay Ustinovskii; Dmitriy Zayarnyi
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Paper Abstract

An opportunity of developing a laser with optical pumping from metastable ArI levels produced by a relativistic electron beam in high-pressure He-Ar gas mixtures was studied. It was shown that high population and long lifetime of the 1s5 level of Ar atom and broad width (~ 10 nm) of the absorption spectral line made it possible to obtain the most optimal lasing conditions in the afterglow of electron beam pulse within the classical three-level pumping scheme. Rate constants for collisional quenching of low-lying 4s-levels of excited argon atom in He-Ar mixtures in the pressure range from 4.0 to 0.75 atm were measured. An increase of photoluminescence on the 2p10-1s5 transition (912.3 nm) upon application of transverse optical pumping with a laser diode array (811.5 nm) was observed. An application of a semi-transparent cavity resulted in a significant increase of this photoluminescence signal in the afterglow indicating amplified spontaneous emission.

Paper Details

Date Published: 3 January 2019
PDF: 6 pages
Proc. SPIE 11042, XXII International Symposium on High Power Laser Systems and Applications, 1104205 (3 January 2019); doi: 10.1117/12.2521790
Show Author Affiliations
Andrey Ionin, P. N. Lebedev Physical Institute (Russian Federation)
Aleksandr Drakin, P. N. Lebedev Physical Institute (Russian Federation)
Igor Kholin, P. N. Lebedev Physical Institute (Russian Federation)
Andrey L'dov, P. N. Lebedev Physical Institute (Russian Federation)
Gevork Mikaelyan, Lassard Systems (Russian Federation)
Dmitriy Sinitsin, P. N. Lebedev Physical Institute (Russian Federation)
Nikolay Ustinovskii, P. N. Lebedev Physical Institute (Russian Federation)
Dmitriy Zayarnyi, P. N. Lebedev Physical Institute (Russian Federation)


Published in SPIE Proceedings Vol. 11042:
XXII International Symposium on High Power Laser Systems and Applications
Paolo Di Lazzaro, Editor(s)

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