【摘要】 本文利用生成函数法，对压缩态光场在双光子吸收介质中的时空传播特性进行了详细分析．结果表明：在双光子吸收过程中，随着传播时间和传播距离的增大，虽然压缩度Ｓ会逐渐减弱，但在相当长的时间和距离内光场仍呈现压缩特性；光场能够维持其压缩特性的时间和距离，依赖于介质的耦合系数Ｋ更多还原

【Abstract】 Abstract This paper is an analysis of the features of squeezed state two photron in absoption medium.The light field is proved to remain in squeezed state for a considerable period of time as time passes and the distance expands, although the squeezing degree is weakening.The time and distance is dependant upon the coupling coefficient of the medium.更多还原