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Proceedings Paper

New look at non-Bloch decay of transient nutation and free induction in S=1/2 systems
Author(s): R. N. Shakhmuratov; F. M. Gelardi; M. Cannas
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Paper Abstract

Steady-state free induction decay (FID), hole burning (HB) and transient nutations (TN) decay are investigated in ensemble of two-level particles with inhomogeneously broadened spectrum. The influence of x- and y-noise components induced by the coherent field exciting the resonant transition is considered. It is shown that 'longitudinal' (x) and 'transverse' (y) noises give the contribution to both T1 and T2 relaxation processes. This effect accelerates TN decay and changes the saturation broadening seen in HB and FID. It is found that when field-noise contributions to 1/T2 and 1/T1 relaxation rates are dominant and equal to each other, the Bloch's saturation is changed to Redfield's saturation. Comparison with experimentally observed FID and TN in nearly ideal spin system (color centers in quartz and silica) is discussed.

Paper Details

Date Published: 26 September 1997
PDF: 10 pages
Proc. SPIE 3239, Photon Echo and Coherent Spectroscopy, (26 September 1997); doi: 10.1117/12.287679
Show Author Affiliations
R. N. Shakhmuratov, E.K. Zavoisky Physical-Technical Institute (Russia)
F. M. Gelardi, Istituto Nazionale per la Fisica della Materia and Istituto di Fisica (Italy)
M. Cannas, Istituto Nazionale per la Fisica della Materia and Istituto di Fisica (Italy)


Published in SPIE Proceedings Vol. 3239:
Photon Echo and Coherent Spectroscopy
Vitaly V. Samartsev, Editor(s)

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