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Publication
Physical Review Letters
Paper
Nonexponential photon-echo decays of paramagnetic ions in the superhyperfine limit
Abstract
Nonexponential photon-echo decays are observed in ruby, Er3+:YLiF4, and Er3+: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. © 1991 The American Physical Society.