Vibrational and Electronic Coherence Observed in Two-Dimensional Integrated Three-Pulse Photon Echo

摘要

Two-dimensional integrated three-pulse photon echo measurement was carried out on saccharide glasses and in poly vinylalcohol (PVA). The echo signals were modulated by coherent molecular vibrations which depended on the delay between the first and the second pulse. For saccharide glasses, a low-frequency critically damped oscillation at ～40cm~(-1), which was assigned to the glass phonon mode, was also observed.