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arXiv · 2411.13426

Compact Blackbody Radiation Atomic Sensor: Measuring Temperature using Optically Excited Atoms in Vapor Cells

David S. La Mantia·Mingxin Lei·Nikunjkumar Prajapati·Noah Schlossberger·Matthew T. Simons·Christopher L. Holloway·Julia Scherschligt·Stephen P. Eckel·Eric B. Norrgard
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Abstract

We demonstrate a blackbody radiation thermometer based on optically excited rubidium atoms in a vapor cell. The temperature measurement is fast, with statistical uncertainty as low as 0.1% in one second. We resolve temperature with a precision of 0.04% in the range 308 K to 344 K when averaging for several seconds. Additionally, we describe an extension to this measurement scheme where the device operates as a self-calibrated, or primary, thermometer. We make progress toward realizing a primary thermometer by demonstrating a temperature-dependent self-consistent calibration scheme, with temperature accuracy of order 1% limited by the uncertainty in atomic transition dipole matrix elements.

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David S. La Mantia, Mingxin Lei, Nikunjkumar Prajapati, Noah Schlossberger, Matthew T. Simons, Christopher L. Holloway, Julia Scherschligt, Stephen P. Eckel, Eric B. Norrgard. 2024-11-20. Compact Blackbody Radiation Atomic Sensor: Measuring Temperature using Optically Excited Atoms in Vapor Cells. https://arxiv.org/abs/2411.13426

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