This paper gives an analysis of the evolution laws of the SU(1.1) compressive coherence in the non-linear medium patterns of DPA (degeneracy parametric amplification ) and nan-simple harmonic oscillator.

• 研究结果表明:在简并参量放大中；SU(1.；1)压缩相干态保持并增强压缩效应; 在非简谐振子模型中；它的压缩效应随时间变化而迅速消失；在这两种非线性光学介质模型中