ソフトアパーチャによる回折
1979 年 7 巻 4 号 p. 377-384
詳細
1979 年 7 巻 4 号 p. 377-384
Near field patterns and irradiance on optical axis have been calculated for plane-wave gaussian beams truncated by circular soft-apertures. Kirchhoff's integral was calculated numerically, using the small-angle Fresnel approximation. And these numerical resuits was confirmed experimentally.
Followed by the numerical and experimental results, the ripples caused by diffraction by soft-apertures were reduced as compared with those by hard-apertures.
