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Published October 15, 1991 | public
Journal Article Open

Time-sequenced optical nuclear magnetic resonance of gallium arsenide


A method of optical detection of nuclear magnetic resonance is demonstrated in which optical nuclear polarization, spin resonance, and optical detection are separated into distinct sequential periods and separately optimized by varying the optical, rf, and static fields. Experiments on the bulk 69Ga resonance of GaAs show that sites imperceptibly perturbed by the optically relevant defect are optically observable with the rf applied in the dark. A signal-to-noise analysis is given that relates the sensitivity to readily measured material properties and indicates applicability to dilute defects.

Additional Information

©1991 The American Physical Society. Received 22 January 1991. This work was supported by the Caltech Consortium in Chemistry and Chemical Engineering: Founding Members: E.I. du Pont de Nemours and Company, and Minnesota Mining and Manufacturing Company. We thank numerous members of the groups of Professor N. Lewis, Professor A. Yariv, and Professor A. Zewail for advice and assistance. S.K.B. acknowledges support by AT&T Bell Laboratories and D.P.W. by the Camille and Henry Dreyfus Foundation.


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