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 (NIST)
    • National Institute of Standards and Technology

Authors

  • Daniel S Barker

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

  • 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 Boulder
    • National Institute of Standards and Technology

  • 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