Power carried by scalar light beams

被引：17

作者：

Cao, Q ^{[1
]}

Deng, XM ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Natl Lab High Power Laser & Phys, Shanghai 201800, Peoples R China

来源：

OPTICS COMMUNICATIONS | 1998年 / 151卷 / 4-6期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/S0030-4018(98)00048-0

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The power density and the light power of a scalar light beam are expressed as power expansions of wavelength lambda in terms of the Fourier transform method. The zeroth-order term of the power density is just the light intensity I in the scalar field theory, and the first two terms of the power density are exactly consistent with the paraxial wave equation. Under the condition that evanescent waves are ignored, the high-order expansion terms of light power are proved to be related to the intensity-momenta of spatial frequency. Moreover, some special examples, such as the power expansion forms of the power density and the Light power of a Gaussian beam, are presented. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：212 / 216

页数：5

共 14 条

[1] BEAM-PROPAGATION FACTOR OF DIFFRACTED LASER-BEAMS [J].