Abstract
Persistent spectral hole burning (PSHB) has attracted much attention due not only to its usefulness in site-selective spectroscopy but also to its applicability to wavelength multiplexed optical memory in the future.1) Though the application is still far from realization, potentially 103 times higher storage density would be attainable. Technological breakthrough is largely concerned with the issue of optimizing the storage materials. For the formation of persistent holes, the existence of both photoreactive centers and a solid matrix is essential, hence the comprehension of intramolecular and intermolecular electron-phonon interaction is of great importance. We have already proposed one working hypothesis, which, derived mainly from the experiments related to the intermolecular interactions, emphasizes the possibility of controlling the mesoscopic structure of the materials.2-4)
© 1992 Optical Society of America
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