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Progress towards a portable, primary Doppler thermometer

POSTER

Abstract

We report on our effort to develop compact thermometers based on the Doppler effect in atomic gases. The Doppler broadening of spectral lines relates gas temperature to physical constants and immutable gas properties, allowing primary thermometry. Our architecture uses an electro-optic frequency comb to both establish an accurate frequency reference and increase measurement speed. We present optical Bloch equation simulations indicating that electro-optic comb spectroscopy mitigates optical pumping effects that can distort the Doppler spectrum. We also discuss initial characterization of our electro-optic comb and spectroscopy systems using Rubidium vapor cells. By integrating an electro-optic comb system with a microfabricated vapor cell, we anticipate that we can realize a primary thermometer with accuracy and measurement speed sufficient for industrial applications.

Presenters

  • Daniel S Barker

    National Institute of Standards and Technology, National Institute of Standards and Technology (NIST)

Authors

  • Daniel S Barker

    National Institute of Standards and Technology, National Institute of Standards and Technology (NIST)

  • Sean M Bresler

    National Institute of Standards and Technology

  • Erin Adkins

    National Institute of Standards and Technology

  • Matthew T Hummon

    National Institute of Standards and Technology, National Institute of Standards and Technology Boulder

  • David A Long

    National Institute of Standards and Technology

  • Benjamin J Reschovsky

    National Institute of Standards and Technology

  • Vladimir Aksyuk

    National Institute of Standards and Technology

  • Stephen P Eckel

    National Institute of Standards and Technology, National Institute of Standards and Technology (NIST)

  • Tobias Herman

    National Institute of Standards and Technology

  • John Kitching

    National Institute of Standards and Technology Boulder