Abstract

Theoretical and experimental studies of photon-echo modulation for the four σ transitions of the R1 line in ruby with an on-axis magnetic field are described. Echoes originating from the Cr3+ ground-state 4A2 (−3/2) spin level (−3/2 echo) are studied for the first time. Unlike ±½ echoes, the −3/2-echo modulation is found to be dominated by Cr–Al interactions occurring outside the 13 inner-shell ions. The +½-echo modulation is observed to be in major disagreement with the theory using previously determined superhyperfine parameters. Regression-analysis studies indicate that this cannot be due solely to parameter errors. Finite nuclear linewidths and/or optical pumping effects are shown to be a plausible source of the disagreement.

© 1986 Optical Society of America

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Corrections

A. Szabo, "On-axis photon-echo modulation in ruby: erratum," J. Opt. Soc. Am. B 3, 1323-1323 (1986)
https://www.osapublishing.org/josab/abstract.cfm?uri=josab-3-10-1323

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