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Physical Review A

Enhanced fluorescence emission of helium atoms by seeded optically driven impact excitation

Liping Shi, Wenxue Li, Dongbi Bai, Hui Zhou, Di Wang, Liangen Ding, Heping Zeng

Published Jul 23, 2013• 2 citations
Publisher

Abstract

We demonstrated enhancement of fluorescence emission from helium atoms in terms of ultraviolet and infrared filaments nonlinear interaction in a mixture of argon and helium atomic gases. The seed electrons produced by ultraviolet pulses were accelerated by infrared filaments to kick a significant amount of helium atoms into high-lying excited states. This provided a method to efficiently excite helium atoms through electron collisions for further investigation on electron-ion collisions and their effects on atomic coherence behavior.

DOI
10.1103/physreva.88.013418

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We demonstrated enhancement of fluorescence emission from helium atoms in terms of ultraviolet and infrared filaments nonlinear interaction in a mixture of argon and helium atomic gases. The seed electrons produced by ultraviolet pulses were accelerated by infrared filaments to kick a significant amount of helium atoms into high-lying excited states. This provided a method to efficiently excite helium atoms through electron collisions for further investigation on electron-ion collisions and their effects on atomic coherence behavior.
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