The method of photothermal beam deflection was demonstrated for measuring the absorption spectrum of an aqueous Nd3+ solution at temperatures between 25°C and 90°C. Changes in the magnitude of the observed deflection can be correlated with the temperature dependence
of both the absorptivity of the Nd3+ ions and the physical properties of the solvent, most notably the thermo-optic coefficient dn/dT.
Lawrence Berkeley Laboratory, Berkeley, California 94720 2:
Lawrence Livermore National Laboratory, Livermore, California 94550
Publication date: October 1, 1993
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