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用旋涂法制备了一种菁染料－聚合物薄膜，并研究了该染料－聚合物薄膜的光谱性质和光存储性能。该染料薄膜在６６０～８３０ｎｍ波段有较强的吸收和２０％以上的反射率。在最佳实验条件下，获得了５８ｄＢ的信噪比。信噪比（ＣＮＲ）、载波信号强度（Ｃ）和薄膜反射率变化（ΔＲ）的对数（ｌｇΔＲ）成正比
A cyanine dye-polymer film was prepared by spin-coating and the spectral properties and optical storage properties of the dye-polymer film were investigated. The dye film in the 660 ~ 830nm band has a strong absorption and reflectivity of 20% or more. Under the best experimental conditions, a signal to noise ratio of 58dB was obtained. The signal-to-noise ratio (CNR), the carrier signal strength (C), and the logarithm of the change in film reflectance (ΔR) (lgΔR)