DEVELOPMENT OF MULTISPECTRAL RECORDING MEDIA FOR MULTILAYER PHOTOLUMINESCENT INFORMATION RECORDING

Abstract

Urgency of the research. Optical information recording by forming of microrelief information elements on the substrate is considered as the most efficient method of long-term data storage.
Target setting. However, density of the optical information recording does not meet the requirements of the modern digital recording systems because diffraction limit significantly reduce the resolution of optical systems.
Actual scientific researches and issues analysis. Scientific research in the area of optical recording shows the high potential of multi-layer photoluminescent media. Volumetric recording is much preferable than development of subdiffraction optical systems due to technical simplicity.
Uninvestigated parts of general matters defining. Typical problems of multilayer photoluminescent recording are low signal-noise ratio and low readout signal level, which makes this method to be inappropriate one for long-term data storage.
The research objective. In this paper it was proposed method of volumetric optical information recording in multilayer, optically homogeneous media with photoluminescent information elements which spectra of photoluminescence differs from layer to layer .
The statement of basic materials. To determine the optimal parameters of multilayer photoluminescent storage with multispectral recording medium the mathematical model of the photoluminescent multilayer recording process was developed.
Conclusions. The task of finding the optimal parameters of the multilayer photoluminescent storage with multispectral recording medium was solved by finding the maximums of the objective functions.

Keywords: optical recording of information; long-term data storage systems; multi³spectral medium; photoluminescent multilayer media; readout signal; objective function; function maximum