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Superlow-Power Readout Characteristics of Photochromic Memory

Readout characteristics have been investigated with a superlow-power readout method in order to solve the problem of information destruction caused by repeated readout operations in photon-mode photochromic memories. For ordinary photochromic diarylethene media, it was possible to read signals of about 105–106 cycles with this method. This method was also applied successfully to wavelength multiplexed recording.