THERMOMETRIC STUDY OF RADIATIONLESS RELAXATION IN SOLIDS

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1976

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Ohio State University

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The heat from radiationless relaxation of electronic excitations in solids readily can be measured at low temperatures using a superconductindg bolometer as a thermometer. With pulsed dye laser excitation, the resulting heat pulses can be followed on the $10^{-8}$ sec timescale, and their form used to infer the relaxation pathway and the characteristic excited-state lifetimes. Several examples of this effect in doped laser crystals and pure transition-metal compounds will be given.

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$^{1}$ F. Morgan, Phys. Rev. 49, 47 (1936). $^{2}$ G. D. Rochester, Proc. Roy. Soc. A167, 567 (1938). ""
Author Institution: Bell Laboratories

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http://hdl.handle.net/1811/9873

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Abstracts of OSU International Symposium on Molecular Spectroscopy 1970-1979