Abstract

The hyperfine splitting of the ground state and the lowest electronic component of the ¹D₂ excited state have been measured for Pr³⁺ in YAG. We show that a particularly simple and powerful technique is the production of sublevel coherence by short-pulse (impact) excitation, which is detected by coherent forward scattering of a weak probe beam and Fourier transformation of the resulting quantum-beat signal. This yielded excited-state splittings of 6.49 and 8.29 MHz. The ground state shows large pseudoquadrupole splittings of 33.4 and 41.6 MHz, which were obtained by optically detected nuclear quadrupole resonance.

© 1983 Optical Society of America

Sublevel echoes selectively excited by light-pulse trains: synchronized-quantum-beat echoes

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