RECORDING SENSITIVITY AND SUPERLOW-POWER READOUT OF PHOTON-MODE PHOTOCHROMIC MEMORY

Theoretical analysis has been carried out to estimate the relationship between recording sensitivity and transfer rate, and possible readout repeatability for a photochromic memory medium (molar extinction coef ficient, epsilon, quantum yield of photoreaction, phi). Under typical conditions (epsilon phi = 1000 l/mol.cm and recording laser power 10 m W (633 nm)), transfer rate of 10 Mbps and readout operation of more th an 10(6) can be achieved by adopting a superlow-power readout method.