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由于计算技术的飞速发展,作为电子计算机“大脑”的存贮器发展也相当快。继70年代光盘存贮技术开发成功之后,又一代新的容量更高的光频选通存贮技术接踵而生。苏联爱沙尼亚共和国科学院和美国国际商业机械公司(IBM)的科学家们在80年代初分别利用生物大分子和晶体中的色心,实现了超容量的信息存贮,存贮密度高达10~(12)bit/cm~2,比光盘高4～5个量级。但这种单频光子选通存贮技术有一个严重的缺点,即存贮的信息随着读取次数的增多,其信噪比会愈来愈差。这对实用化来说是十分不利的。为了克服这一困难,IBM公司的科学家们又提出了一种更新的具有门控开关的双频光子选通存贮技术。这种技术既保留了单频光子选通技术的超存贮容量的优点,同时又克
Due to the rapid development of computing technology, memory development as a computer “brain” is also quite rapid. Following the successful development of optical disk storage technology in the 1970s, another generation of new optical strobe storage technologies with higher capacity came into being. Scientists from the Academy of Sciences of the Republic of Estonia and IBM (International Business Machines Corporation) used excess color centers in biological macromolecules and crystals in the early 1980s to store information of over capacity, with storage densities as high as 10-12% bit / cm ~ 2, higher than the disc 4 to 5 orders of magnitude. However, this single-frequency photon-strobe storage technology has a serious disadvantage that the stored signal will have a poorer signal-to-noise ratio as the number of reads increases. This is very detrimental to practical use. To overcome this difficulty, IBM scientists have proposed a new dual-band photon gated storage technology with a gated switch. This technique not only retains the advantages of single-frequency photonic gating technology super storage capacity, while grams