角反射器阵列作为伪相位共轭器件的保真度分析

摘要

The reflector array is used as pseudo phase conjugator in the common path/common mode adaptive optics system. The ability and the fidelity of the reflector array to provide pseudo phase conjugate of the incoming wave was analyzed. The phases of pseudo phase conjugate waves are simulated and the fidelities of different reflector arrays and different aberrations are calculated, while the aberration of the incoming wave is given in Zernike model. It is shown that the fidelity is detemined not only by the cells’ number and arrangement of the retroreflector array, but also by the aberration itself. Different kinds of aberrations will have different fidelities. Factors such as diffraction, dihedral error, surface precision, which can influence the fidelity of the retroreflector array, are discussed too.%研究了共光路共模块自适应光学系统中用角反射器阵列构成伪相位共轭器件，角反射器阵列形成伪相位共轭波的能力，具体计算了不同单元数的角反射器阵列形成具有Zernike多项式展开的各阶像差的波面的相位共轭波的保真度。角反射器阵列的保真度决定于其单元数和阵列结构，对于不同类型的像差保真度也是不同的。最后还对各种影响因素如衍射、二面角误差和面形误差等也进行了分析。