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介绍了双光子吸收光致变色光存储的存储原理,利用单光束双光子吸收三维光存储和反射式荧光共焦扫描 读出实验装置,分别进行了写入激光功率、曝光时间和存储深度不同时双光子吸收光致变色三维光信息存储特性 (读出信号强度和存储点尺寸)的实验研究。结果表明,读出信号强度主要取决于写入时的激光功率和曝光时间。 读出信号强度在激光功率较低时与写入激光功率的平方成正比,而当写入激光功率大于一定值时,读出信号强度 达到了饱和。读出信号强度随着曝光时间的增加也明显地呈现出饱和效应。此外,读出信号强度随着存储深度的 增加明显地减弱了。存储点尺寸随着写入激光功率的增大、曝光时间的增长也迅速增大。较高的写入激光功率和 较短的曝光时间有利于信息的高速存储。
The storage principle of two-photon absorption photochromic light storage is introduced. By using the single-beam two-photon absorption three-dimensional optical storage and the reflective fluorescence confocal scanning readout experimental device, respectively, the write laser power, the exposure time and the storage depth are different Experimental Study of Two - Photon Absorption Photochromic Three - Dimensional Optical Information Storage Characteristics (Read Signal Strength and Storage Point Size). The results show that the readout signal intensity depends mainly on the laser power and exposure time during writing. The readout signal intensity is proportional to the square of the write laser power when the laser power is low, and reaches saturation when the write laser power is greater than a certain value. The readout signal intensity also clearly shows a saturation effect as the exposure time increases. In addition, read signal strength is significantly reduced with increasing memory depth. Storage Point Size As the written laser power increases, the exposure time increases rapidly. Higher write laser power and shorter exposure time facilitate the high-speed storage of information.