欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
基于瑞利-索末菲衍射积分，未使用任何近似，对非傍轴矢量光柬的两种光强表示式，即传统光强公式和时间平均坡印廷矢量的z分量进行了研究。对非傍轴矢量高斯光束详细数值计算结果的比较表明，两种表示式之间的差异，即两者的相对误差与柬腰宽度及传输距离和波长的比值有关。对非傍轴矢量高斯光束，若传输距离与波长的比值为10，束腰宽度与波长的比值大于等于0．8，则最大相对误差不到1．5％。因此，传统光强公式是可用的。
英文摘要：
Based on the vectorial Rayleigh-Sommerfeld diffraction integrals, the two expressions for the intensity of nonparaxial vectorial beams, i.e. , the conventional intensity expression and the z component of the time-averaged Poynting vector, are studied without using any approximation. A detailed numerical comparison for nonparaxial vectorial Gaussian beams shows that the discrepancy between the two expressions, namely, the relative error, depends on the ratio of the waist width to the propagation distance and that of the wavelength to the propagation distance, respectively, and the error decreases with the increase of the two ratios. For nonparaxial vectorial Gaussian beams, if the ratio of the wavelength to the propagation distance is 10, and the ratio of the waist width to the propagation is no less than 0.8, the maxima relative error is no more than 1.5%. Thus, the conventional intensity is applicable.
同期刊论文项目
同项目期刊论文
Composite optical vortices in noncollinear Laguerre-Gaussian beams and their propagation in free spa
Charaterization of nonparaxial truncated Cosine-Gaussian Beams and the beam quality in the far field
Vectorial nonparaxial flattened Gaussian beams and their beam quality in terms of the power in the b
Partially coherent cosh-Gaussian beams in atmospheric turbulence with the same directionality as a L
Comparative study of the beam-width spreading of partially coherent Hermite-sinh-Gaussian beams in a
Spectral shifts and spectral switches of diffracted spatially and spectrally partially coherent puls
Phase singularities of the transverse field component of high numerical aperture dark-hollow Gaussia
Composite optical vortices in two noncollinear cosh-Gaussian vortex beams and their propagation prop
Far-field properties and beam quality of vectorial Hermite-Laguerre-Gaussian beams beyond the paraxi
位置：