diffraction;
propagation;
divergence;
free field angular spectrum;
second moment;
beam quality;
polarization;
D O I:
暂无
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
Reciprocal quantities are introduced in terms of the second moments associated with the near and far fields in wide-angle scalar wave propagation. Free fields are considered and conditions for the finiteness of the second moments are analyzed. Relations of the exact full-wave far field to the corresponding paraxial solution are established. Effects of polarization on wide-angle divergence are also briefly addressed.