An all-optical atomic magnetometer-gradiometer for use in Earth's field.

POSTER

Abstract

We present the design and initial characterization of an all-optical atomic magnetometer and gradiometer. The magnetometer and gradiometer channels utilize pulsed optical pumping synchronous with the Larmor precession of 87Rb atoms, while a co-propagating probe beam reads out both the magnetometer and gradiometer signals. The magnetometer sensitivity is near 200 fT/Hz\textasciicircum 1/2, while the gradiometer sensitivity is below 100 fT/cm/Hz\textasciicircum 1/2 on a 4 cm baseline. We will also present the characterization of the common mode rejection ratio and our approach to mitigating deadzones in the measurement.

*DARPA

Authors

  • Robert Wyllie

    • Georgia Tech Research Institute, Atlanta, Georgia, 30318, USA

  • Abigail Perry

    • Georgia Tech Research Institute, Atlanta, Georgia, 30318, USA

  • Thad Walker

    • University of Wisconsin, Madison, Wisconsin 53706, USA

  • Bob Buckley

    • Freedom Photonics, Santa Barbara, CA 93117

  • Gordon Morrison

    • Freedom Photonics, Santa Barbara, CA 93117

  • Michael Bulatowicz

    • Northrop Grumman Corporation, Woodland Hills, California 91367, USA

  • Robert Griffith

    • Northrop Grumman Corporation, Woodland Hills, California 91367, USA

  • Philip Clark

    • Northrop Grumman Corporation, Woodland Hills, California 91367, USA

  • Dennis Bevan

    • Northrop Grumman Corporation, Woodland Hills, California 91367, USA

  • Bo Halamandaris

    • Northrop Grumman Corporation, Woodland Hills, California 91367, USA

  • James Pavell

    • Northrop Grumman Corporation, Woodland Hills, California 91367, USA

  • Michael Larsen

    • Northrop Grumman Corporation, Woodland Hills, California 91367, USA