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在材料反射率及记录信息空间分布任意的情况下,分析了双波长读出信号及其串扰,建立了理论模型.提出读出信号减去另一波长读出信号与特定系数乘积以消除线性串扰的方法,该系数仅与另一波长对应材料的摩尔消光系数有关,与材料反射率分布、记录信息等无关,也与原波长激光对应材料无关.以两种二芳基乙烯为记录介质作多波长光存储串扰消减实验,实验结果与理论相符.
In the case of arbitrary material reflectivity and spatial distribution of recorded information, the dual-wavelength readout signal and its crosstalk are analyzed and a theoretical model is established. The proposed method is to remove the crosstalk between the read signal minus the product of the other wavelength readout signal and the specific coefficient , Which is only related to the molar extinction coefficient of the corresponding material of the other wavelength and has nothing to do with the material’s reflectivity distribution and recording information and also with the corresponding material of the original wavelength laser.With two diarylethene as the recording medium Wavelength optical storage crosstalk reduction experiment, the experimental results are in line with the theory.