Abstract

Upper-state nonradiative relaxation in the 3.2–1.9-eV energy region of the excited-state manifold of Cr⁴⁺-doped forsterite is investigated. Measurements of the upconverted hot-luminescence spectra reveal two electronic bottlenecks and several phonon modes involved in the initial steps of the vibrational relaxation at different portions of the excited-state manifold.

© 1993 Optical Society of America

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