Nitrogen buffer gas pressure tuning in a micro-machined vapor cell

Dyer, S. and McWilliam, A. and Hunter, D. and Ingleby, S. and Burt, D. P. and Sharp, O. and Mirando, F. and Griffin, P. F. and Riis, E. and McGilligan, J. P. (2023) Nitrogen buffer gas pressure tuning in a micro-machined vapor cell. Applied Physics Letters, 123 (7). 074001. ISSN 0003-6951 (https://doi.org/10.1063/5.0153881)

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Abstract

We demonstrate a controllable depletion of the nitrogen buffer gas pressure in a micro-machined cesium (Cs) vapor cell from the dynamic heating of an alkali dispenser pill. When the alkali source is laser activated, the gettering compounds within the alkali pill dispenser reduce the nitrogen (N2) content from the vapor for fine-tuning of the alkali to buffer gas pressure ratio, with a demonstrated pressure step size as low as 1 Torr. Additionally, we decrease the buffer gas pressure below 100 mTorr to evaluate the presence of other potential broadening mechanisms. Real-time control of the gas pressure ratio in the vapor cell will have notable benefits for refining atomic sensor performance and provide a routine to achieve various target pressures across a wafer bonded with a uniform back-filled buffer gas pressure.

  • Item type:Article
    ID code:86965
    Dates:
    Date
    Event
    14 August 2023
    Published
    3 August 2023
    Accepted
    14 June 2023
    Submitted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:16 Oct 2023 11:26
    Last modified:27 Apr 2024 13:36
    URI:https://strathprints.strath.ac.uk/id/eprint/86965
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