Measurements of optical rotary-echo decay of the R1(-1/2),σ transition of Cr3+ in dilute ruby at 2 K are described and compared with predictions of two recent modifications (Gauss-Markov and random-telegraph models) of the optical Bloch equations (OBE’s). While the modified OBE approximately describes the free-induction decay behavior both in Pr3+:LaF3 and ruby, we show that rotary-echo decay in ruby is instead described by the standard OBE. Various aspects of the spin flip-flop model used in the theories are discussed in regard to ruby, as well as other possible dephasing contributions.
American Physical Society
Physical Review A38, no. 11: 5928–5930.
Mr. Szabo was affiliated with the National Research Council of Canada, Division of Physics when they authored this article.