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Off-axial elliptical cosine-Gaussian beams and their propagation properties
作者姓名:吕章德
作者单位:Department of Physics, Shaoxing College of Arts and Sciences, Shaoxing 312000, China
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.

关 键 词:离轴椭圆余弦-高斯光束  传播特性  不对称光学系统  衍射积分
收稿时间:2006-10-18
修稿时间:2006-10-182006-11-30

Off-axial elliptical cosine-Gaussian beams and their propagation properties
Lu Zhang-De.Off-axial elliptical cosine-Gaussian beams and their propagation properties[J].Chinese Physics B,2007,16(5):1320-1326.
Authors:Lu Zhang-De
Institution:Department of Physics, Shaoxing College of Arts and Sciences, Shaoxing 312000, China
Abstract: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.
Keywords:elliptical cosine-Gaussian beams  nonsymmetrical optical systems  diffraction integral
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