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Quantum Electronics and Laser Science Conference

Nonexponential superhyperfine-limited photon-echo decays

Joseph Ganem, Y. P. Wang, D.M. Boye, Richard S. Meltzer, William M. Yen, R. M. Macfarlane

Published May 12, 1991• 0 citations
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Nonexponential photon-echo decays are observed in ruby, ${\mathrm{Er}}^{3+}$:${\mathrm{YLiF}}_{4}$, and ${\mathrm{Er}}^{3+}$:${\mathrm{LaF}}_{3}$ with samples of low ion concentrations in high (10--50 kG) magnetic fields. At the highest fields, photon-echo decays are field independent and their temporal forms are identical for all three systems. This behavior is attributed to optical dephasing arising from electron-spin nuclear-spin superhyperfine interactions in the presence of a frozen core.

Physical Review Letters•Feb 11, 1991•66 citations
Nonexponential photon-echo decays are observed in ruby, Er3+{\mathrm{Er}}^{3+}Er3+:YLiF4{\mathrm{YLiF}}_{4}YLiF4​, and Er3+{\mathrm{Er}}^{3+}Er3+:LaF3{\mathrm{LaF}}_{3}LaF3​ with samples of low ion concentrations in high (10--50 kG) magnetic fields. At the highest fields, photon-echo decays are field independent and their temporal forms are identical for all three systems. This behavior is attributed to optical dephasing arising from electron-spin nuclear-spin superhyperfine interactions in the presence of a frozen core.