New look at non-Bloch decay of transient nutation and free induction in S=1/2 systems

R. N. Shakhmuratov; F. M. Gelardi; M. Cannas

doi:10.1117/12.287679

26 September 1997 New look at non-Bloch decay of transient nutation and free induction in S=1/2 systems

R. N. Shakhmuratov, F. M. Gelardi, M. Cannas

Proceedings Volume 3239, Photon Echo and Coherent Spectroscopy; (1997) https://doi.org/10.1117/12.287679
Event: PECS '97: Photon Echo and Coherent Spectroscopy, 1997, Yoshkar-Ola, Russian Federation

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.

Citation Download Citation

R. N. Shakhmuratov, F. M. Gelardi, and M. Cannas "New look at non-Bloch decay of transient nutation and free induction in S=1/2 systems", Proc. SPIE 3239, Photon Echo and Coherent Spectroscopy, (26 September 1997); https://doi.org/10.1117/12.287679

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