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High-Density Frequency-Domain Optical Recording

Frequency-domain optical recording based on the phenomenon of persistent spectral hole burning permits very high storage densities in excess of 109 bits/cm2 and very fast data access times through the combined use of spatial and spectral data storage. This paper reviews recent advances in the development of storage materials and describes exploratory investigations of technological issues of frequency-domain optical recording such as simultaneous high-density spatial and spectral recording and fast data readout.