Drift Error Analysis of Atomic Spin Gyroscope

Abstract:

With the rapid development of quantum manipulation technique, atomic spin gyroscope has been demonstrated in recent years. Understanding the sources and the influence of error on the performance of atomic spin gyroscope is important during the design of such devices. The basic principle of atomic spin gyroscope was reviewed and the analysis of error sources presented began with the coupled Bloch equations describing the dynamics of atomic spin gyroscope including magnetic field, light shift and pump-probe non-orthogonality. It was shown analytically that the first order effects of the transverse magnetic fields and imperfections can be eliminated by turning the longitudinal magnetic field on the magnetic field compensation point. The effects of longitudinal magnetic field and light shift imperfections with other terms zeroed contributed only to scale factor of the atomic spin gyroscope. Furthermore, the effects magneto-optical crystal and magnetic shielding due to temperature drift were described and according approaches to suppress these errors were also proposed.

• Periodical: Applied Mechanics and Materials (Volumes 241-244)
• Pages: 488-493
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.241-244.488
• Online since: December 2012
• Authors: Shuang Ai Wan*, Jian Cheng Fang, Yao Chen
• Keywords: Atomic Spin Gyroscope, Drift Error, Light Shift, Magnetic Fields Error, Temperature Drift

References

[1] Barbour N and Schmidt G. 2001 Inertial sensor technology trends. IEEE Sensors Journal, 1, pp.332-339.

DOI: 10.1109/7361.983473

[2] Lawrence, A. 1998 Springer Verlag: Modern inertial technology: navigation, guidance, and control.

[3] T.W. Kornack, R. K. Ghosh, and M.V. Romalis. 2005 Nuclear Spin Gyroscope Based on an Atomic Comagnetometer. Physical Review Letters. 95 230801.

DOI: 10.1103/physrevlett.95.230801

[4] Stoner R. and Walsworth R. 2006 Collisions give sense of direction. Nature Physics, 2, pp.17-18.

DOI: 10.1038/nphys204

[5] Rice, H.F. and Benischek, V. In Submarine navigation applications of atom interferometry, Position, Location and Navigation Symposium, 2008 IEEE/ION, Monterey, CA, 5-8 May 2008; Monterey, CA, 2008; pp.933-939.

DOI: 10.1109/plans.2008.4570035

[6] Kornack T.W. 2005 Ph.D. Princeton University Thesis A Test of CPT and Lorentz Symmetry Using a K-3He Co-magnetometer.

[7] Justin Matthew Brown 2011 Ph.D. Princeton University Thesis A New Limit on Lorentz-and CPT-Violating Neutron Spin Interactions Using a K-3He Co-magnetometer.

[8] Scott Jeffrey Seltzer 2008 Ph.D. Princeton University Thesis Developments in Alkali-Metal Atomic Magnetometer.