We have observed photon-gated photoconductivity in Pr:YAG, providing clear evidence for photoionization of the trivalent praseodymium ion in the solid state. Photoionization occurs by two-step absorption from (3)H(4)(1) ? (1)D(2)(1) followed by an excited-state absorption from (1)D(2) to the lowest component of the 4f5d configuration. The excitation spectrum of the photocurrent shows sharp (1)D(2) spectral features, providing unambiguous assignment of the photocurrent.
No takes yet. Share an insight, caveat, or question.
Wittmann et al. (1996) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: