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Award ID contains: 1607439

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  1. ; (, Sensors)
    In this paper, we describe a new approach to the continuous operation of a transverse spin-exchange optically pumped NMR gyroscope that utilizes modulation of both the applied bias field and the optical pumping. We demonstrate the simultaneous, continuous excitation of 131Xe and 129Xe using this hybrid modulation approach and the real-time demodulation of the Xe precession using a custom least-squares fitting algorithm. We present rotation rate measurements with this device, with a common field suppression factor of ∼1400, an angle random walk of 21 μHz/Hz, and a bias instability of ∼480 nHz after ∼1000 s. 
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  2. ; ; ; ; ; ; (, Physical Review A)
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  3. ; ; ; (, Physical Review Applied)
  4. ; ; ; (, Reviews of Modern Physics)
  5. (, Photonics Conference (IPC), 2016 IEEE)
    Spin-exchange pumped NMR gyros scale well to small volumes due to the gentle 1/L scaling of the fundamental NMR relaxation rates with cell size L and their use of imbedded ultra sensitive atomic magnetometers that directly measure the quantum-enhanced field due to the precessing nuclei. This talk will give an overview of the present technology and describe new approaches that promise improved long-term stability. 
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