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- W2391570369 abstract "Starting from the vectorial Rayleigh-Sommerfeld diffraction integrals and taking the nonparaxial vectorial cosine-Gaussian(CoG)beam as an example,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.The numerical results and comparison for nonparaxial vectorial CoG beams show that the relative error η between the two intensity expressions depends on the ratios w0/λ,z/λ and decentered parameter b,where w0,λ and z denote the waist width,wavelength and propagation distance,respectively.If the decentered parameter b is smaller,and waist-width to wavelength ratio w0/λ is not very small,for example,if b≤0.8,w0/λ≥0.8 and z/λ=10 the maximum relative error between the two expressions ηmax2%.Therefore,the conventional intensity expression can be used." @default.
- W2391570369 created "2016-06-24" @default.
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- W2391570369 date "2008-01-01" @default.
- W2391570369 modified "2023-09-23" @default.
- W2391570369 title "Comparative Study of Two Intensity Expressions of Nonparaxial Vectorial Cosine-Gaussian Beams" @default.
- W2391570369 hasPublicationYear "2008" @default.
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