摘要
分析了衍射与无衍射光束的特点,讨论了无衍射光束的判据,指出衍射实质上是波动方程的非本征解光束在传输过程中趋于本征解光束的特点。
Characteristics of light diffraction and diffraction free beams are analyzed. The criterion to diffraction free beams is discussed. It is pointed out that light diffraction means a non eigen solution beam of the wave equation degenerating into an eigen solution beam during propagation.
出处
《中国激光》
EI
CAS
CSCD
北大核心
1999年第1期65-69,共5页
Chinese Journal of Lasers
关键词
衍射
无衍射光束
本征值光束
light diffraction, diffraction free beam, eigen solution beam