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15 February 2018 Excitation of higher lying energy states in a rubidium DPAL
A.J. Wallerstein, Glen Perram, Christopher A. Rice
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Proceedings Volume 10511, Solid State Lasers XXVII: Technology and Devices; 105112J (2018) https://doi.org/10.1117/12.2286888
Event: SPIE LASE, 2018, San Francisco, California, United States
Abstract
The spontaneous emission in a cw rubidium diode dumped alkali laser (DPAL) system was analyzed. The fluorescence from higher lying states decreases with additional buffer gas. The intermediate states (7S, 6P, 5D) decay more slowly with buffer gas and scale super-linearly with alkali density. A detailed kinetic model has been constructed, where the dominant mechanisms are energy pooling and single photon ionization. It also includes pumping into the non-Lorentzian wings of absorption profiles, fine structure mixing, collisional de-excitation, and Penning ionization. Effects of ionization in a high powered CW rubidium DPAL were assessed.
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A.J. Wallerstein, Glen Perram, and Christopher A. Rice "Excitation of higher lying energy states in a rubidium DPAL", Proc. SPIE 10511, Solid State Lasers XXVII: Technology and Devices, 105112J (15 February 2018); https://doi.org/10.1117/12.2286888
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KEYWORDS
Rubidium
Ionization
Helium
Ions
Absorption
Electrons
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