摘要
计算了加光阑贝塞尔光束的空间频谱．从空间频谱的角度讨论了加光阑贝塞尔光束的传输．得到近似无衍射光束的判据：空间频谱存在非零频主极大且占主要能量的频谱较窄。通过空间滤波可改善光束的传输性质。
The Space spectra of the apertured Bessel beam are calculated. The Propagation of the apertured Bessel beam is discussed from the view of space spectrum. The critoria of the nearly diffraction-flee beam is: the space spectrum has a non-zero major maximum and the spectrum width are narrow. The Propagation feature can be improved through space filtering.
出处
《中国激光》
EI
CAS
CSCD
北大核心
1996年第7期611-617,共7页
Chinese Journal of Lasers
