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中文摘要：
Starting from the Rayleigh-Sommerfeld diffraction integral,this paper studies the spectral behavior in Young’s experiment illuminated by nonparaxial partially coherent light and compares with the paraxial case,where the influence of nonparaxiality of partially coherent light on the spectral shifts and spectral switches is stressed.It is shown that there is a spectral shift in the nonparaxial case relative to the paraxial one and the critical position changes,at which the spectral switch occurs.The ratio of the waist width to the central wavelength w 0 /λ 0 and relative spatial correlation length affect the spectral difference.The smaller w 0 /λ 0 is,the larger the difference between the nonparaxial and paraxial results appears.The effect of relative spatial correlation length is relatively small.
英文摘要：
Starting from the Rayleigh-Sommerfeld diffraction integral, this paper studies the spectral behavior in Young＇s experiment illuminated by nonparaxial partially coherent light and compares with the paraxial case, where the influence of nonparaxiality of partially coherent light on the spectral shifts and spectral switches is stressed. It is shown that there is a spectral shift in the nonparaxial case relative to the paraxial one and the critical position changes, at which the spectral switch occurs. The ratio of the waist width to the central wavelength ω0/λ0 and relative spatial correlation length △ affect the spectral difference. The smaller ω0/λ0 is, the larger the difference between the nonparaxial and paraxial results appears. The effect of relative spatial correlation length △ is relatively small.
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