非线性物理：引言一一混沌 Ikeda Attractor zn+i=a+bz explik -ip/(1+2 =0.85,b=0.9,k=0.4,p=7.7 The pictures here show the strange attractor that results from the time evolution of an optical cavity containing a nonlinear dielectric subjected to a periodic string of light pulses.The picture is a cumulative plot of the phase and amplitude 4 of the pulse.For a given output pulse the complex number Z=Aexp(i)is obtained (Re(Z)=horizontal axis and Im(Z)=vertical axis).Pixel colors are plotted according to how often Z falls onto that pixel. ® 非线性物理：引言－－混沌 The pictures here show the strange attractor that results from the time evolution of an optical cavity containing a nonlinear dielectric subjected to a periodic string of light pulses. The picture is a cumulative plot of the phase  and amplitude A of the pulse. For a given output pulse the complex number Z=Aexp(i) is obtained (Re(Z)=horizontal axis and Im(Z)=vertical axis). Pixel colors are plotted according to how often Z falls onto that pixel. Ikeda Attractor zn+1=a+bznexp[ik -ip/(1+|zn2|)] a=0.85, b=0.9, k=0.4, p=7.7