混沌激光器阵列中斑图的形成与冻结

为了研究混沌激光器阵列中激光器同步行为,采用计算机数值模拟方法,对固定边界条件下的二维Lorenz-Haken激光器阵列进行了研究,发现激光器在空间上呈现出了丰富的斑图现象.实验结果表明,不同斑图的形成与激光器阵列数目大小N、激光器间耦合强度α有关.当混沌激光器阵列数目N固定时,随着激光器阵列间耦合强度的增加,激光器阵列在空间上出现的斑图依次呈现为空间无序、空间轴对称、空间中心对称状态,最终被冻结到不同的固定点,仍呈中心对称状态和空间轴对称和空间中心对称和冻结所对应的临界耦合强度αc随着激光器阵列数目大小N的增加而增加.

Pattern formation and frozen in chaotic laser arrays

Two-dimensional Lorenz-Haken's laser array with the fixed boundary conditions has been studied with the computer numerical simulation method.The laser array shows rich patterns.The experimental result indicates that different pattern formation can be affected by the size of the laser array and the coupling strength between the lasers.When the size of the laser array is fixed,the laser array in space presents the spatial disorder state,the spatial axial symmetrical state,and the spatial center symmetrical state with the coupling strength increasing.Finally the lasers freeze to the different fixed points,and the laser array is still centrally symmetric.The critical coupling strengths of three states(axial symmetry of space,the space center symmetry,and frozen state) increase with the size of the laser array increasing.