Thermal Emission of Strontium in a Cryogenic Buffer Gas Beam Source

We demonstrate production of cold atomic strontium (Sr) and strontium-containing molecules (SrOH) in a cryogenic buffer gas beam source via direct heating of strontium oxide (SrO) with 30 mJ laser pulses several milliseconds long. \(3.7(2)\times10^{14}\) Sr atoms are released, which represents a fac...

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Bibliographic Details
Published in:arXiv.org 2024-07
Main Authors: Winnicki, Andrew, Lasner, Zack D, Doyle, John M
Format: Article
Language:English
Subjects:
Buffers
Laser ablation
Laser beam heating
Strontium
Strontium oxides
Thermal emission
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Summary:We demonstrate production of cold atomic strontium (Sr) and strontium-containing molecules (SrOH) in a cryogenic buffer gas beam source via direct heating of strontium oxide (SrO) with 30 mJ laser pulses several milliseconds long. \(3.7(2)\times10^{14}\) Sr atoms are released, which represents a factor of 7 increase in atomic production per pulse compared to nanosecond-scale ablation laser pulses. A peak atomic density of \(1.93(6) \times 10^{12}\) atoms/cm\(^3\) is achieved, which corresponds to a factor of 2 increase relative to ablation. We further propose extensions of this method to other atomic and molecular species.
ISSN:2331-8422