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Type: Journal article
Title: Laser-based metastable krypton generation
Author: Dakka, M.
Tsiminis, G.
Glover, R.
Perrella, C.
Moffatt, J.
Spooner, N.
Sang, R.
Light, P.
Luiten, A.
Citation: Physical Review Letters, 2018; 121(9):093201-1-093201-6
Publisher: American Physical Society
Issue Date: 2018
ISSN: 0031-9007
Statement of
M. A. Dakka, G. Tsiminis, R. D. Glover, C. Perrella, J. Moffatt, N. A. Spooner, R. T. Sang, P. S. Light, and A. N. Luiten
Abstract: We demonstrate the generation of metastable krypton in the long-lived 1s5 state using laser excitation. The atoms are excited through a two-photon absorption process into the 2p6 state using a pulsed optical parametric oscillator laser operating near 215 nm, after which the atoms decay quickly into the metastable state with a branching ratio of 75%. The interaction dynamics are modeled using density matrix formalism and, by combining this with experimental observations, we are able to calculate photoionization and two-photon absorption cross sections. When compared to traditional approaches to metastable production, this approach shows great potential for high-density metastable krypton production with minimal heating of the sample. Here, we show metastable production efficiencies of up to 2% per pulse. The new experimental results gained here, when combined with the density matrix model we have developed, suggest that fractional efficiencies up to 30% are possible under optimal conditions.
Rights: © 2018 American Physical Society
RMID: 0030098090
DOI: 10.1103/PhysRevLett.121.093201
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Appears in Collections:Physics publications

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