Spectral shifts and spectral switches of partially coherent light passing through an aperture
Spectral shifts and spectral switches of partially coherent light passing through an aperture
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DOI：
10.1016/s0030-4018(99)00051-6
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发表时间：
1999-04
影响因子：
2.4
通讯作者：
J. Pu;Huihuang Zhang;S. Nemoto
中科院分区：
文献类型：
--
作者：
J. Pu;Huihuang Zhang;S. Nemoto
在菲涅尔近似中，我们研究了当某一类部分相干光入射到圆形孔径上时近区的光谱特性。结果表明，随着孔径与轴上观察点之间的距离z减小，光谱偏移呈现逐渐变化。然而，当 z 接近临界值时，会发生快速光谱切换。说明了从逐渐光谱偏移到快速光谱切换的演变。还介绍了相干性对光谱开关的影响。
Within the Fresnel approximation, we investigate the spectral characteristics in the near zone when a certain class of partially coherent light is incident on a circular aperture. It is shown that, as the distance z between the aperture and the on-axis observation point decreases, the spectral shifts show gradual change. However, when z approaches a critical value, a rapid spectral switch occurs. The evolution from a gradual spectral shift to a rapid spectral switch is illustrated. The effect of the coherence on the spectral switch is also presented.