Abstract
Two-dimensional integrated three-pulse photon echo (2D-2PPE) measurement was carried out in saccharide glasses and in an organic polymer glass, polyvinylalcohol (PVA), at low temperatures. 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 was also observed.
© 2004 Optical Society of America
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