D. Zimdars et al., PICOSECOND INFRARED VIBRATIONAL PHOTON-ECHOES IN A LIQUID AND GLASS USING A FREE-ELECTRON LASER, Physical review letters, 70(18), 1993, pp. 2718-2721
The first infrared vibrational photon echo experiments conducted in a
liquid and a glass are reported. The experiments were performed on the
CO stretching mode of tungsten hexacarbonyl at 5.1 mum (1960 cm-1) in
2-methyltetrahydrofuran over the temperature range 300 to 16 K using
picosecond pulses from the free electron laser at Stanford University.
In addition, the first vibrational population relaxation measurements
spanning a temperature range that takes a system from a liquid to a s
upercooled liquid to a glass are reported.