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Journal of Sol-Gel Science and Technology

Sol-gel derived hybrid polymers as alternative materials for optical data storage in the frequency domain

Gerhard Schottner, W. Grond, L. K�mmerl, D. Haarer

Published Jan 1, 1994• 4 citations
Publisher
DOI
10.1007/bf00486327

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Optical frequency-domain data storage using persistent spectral hole burning has been considered for more than ten years by now and the material parameter space required has been investigated and discussed [1,2]. An alternative approach to spectral storage, by utilizing the time-domain has been proposed by Mossberg [3]. This approach using coherent transient techniques (photon echoes) has gained increasing attention during the last years. However, to our knowledge an analysis of the required material parameter space for this approach still has not been published. In this conference paper some preliminary material considerations pertaining to time-domain storage and processing in inorganic crystals are presented.

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Over the report period, an optical laboratory for characterization materials for frequency domain optical storage was upgraded. Spectral and spectral hole burning properties were studied for several free-based and metallo-naphthalocyanine derivatives in polymer hosts. These materials exhibit a strong 0-0 absorption band and persistent hole burning in the region 800 nm. Hole burning parameters were determined for eight materials; in particular, the hole burning kinetics was analyzed and the quantum efficiencies were determined to be between 0.1% and 1%. Holograms (data pages) in the transmission geometry were successfully recorded in the materials studied using single frequency laser diodes. A photoluminescence of five natural diamonds (type Ia) implanted with Xe ions with dose range 1x10(exp 13) - 5x10(exp 14) /sq cm was investigated as a function of thermal annealing at temperatures between 300 and 1400 C.
Optical frequency-domain data storage using persistent spectral hole burning has been considered for more than ten years by now and the material parameter space required has been investigated and discussed [1,2]. An alternative approach to spectral storage, by utilizing the time-domain has been proposed by Mossberg [3]. This approach using coherent transient techniques (photon echoes) has gained increasing attention during the last years. However, to our knowledge an analysis of the required material parameter space for this approach still has not been published. In this conference paper some preliminary material considerations pertaining to time-domain storage and processing in inorganic crystals are presented.