Infrared hole-burning spectroscopy of matrix-isolated ReO(4)(-)molecules.
CO(2)-laser-diode-laser hole-burning spectroscopy has been used to measure the temperature-dependent homogeneous linewidth of the ReO(4)(-) infrared active internal-vibrational mode (nu(3)) in alkali halide lattices. Hole widths as small as 20 MHz (FWHM) have been observed in an inhomogeneously broadened line of width as large as 1 cm(-1). Our measurement of the homogeneous linewidth over 4 orders of magnitude indicates that elastic acoustic phonon scattering is the dominant T(2) relaxation process from 10 to 600 K.
Chraplyvy
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Moerner
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Sievers
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AJ