中国物理B ›› 2007, Vol. 16 ›› Issue (5): 1320-1326.doi: 10.1088/1009-1963/16/5/026
• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇 下一篇
吕章德
Lu Zhang-De(吕章德)†
摘要: In this paper, a new kind of light beam called off-axial elliptical cosine-Gaussian beam (ECosGBs) is defined by using the tensor method. An analytical propagation expression for the ECosGBs passing through axially nonsymmetrical optical systems is derived by using vector integration. The intensity distributions of ECosGBs on the input plane, on the output plane with the equivalent Fresnel number being equal to 0.1 and on the focal plane are respectively illustrated for the propagation properties. The results indicate that an ECosGB is eventually transformed into an elliptical cosh-Gaussian beam. In other words, ECosGBs and cosh-Gaussian beams act in a reciprocal manner after propagation.
中图分类号: (Beam characteristics: profile, intensity, and power; spatial pattern formation)