Abstract
We have investigated the spectral and temporal dynamics associated with phonon decay in the YAG:Pr3+ system at a range of temperature between 9 and 25 K. Nonequilibrium phonons were generated using defect induced one phonon absorption (DIOPA) of far infrared (FIR) radiation1. Phonon detection was achieved optically using a variation of absorption vibronic sideband phonon spectroscopy2.
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