| The spectral changes of partially coherent light focused by an apertured lens with chromatic aberration |
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| 作者姓名： | 蒲继雄 蔡超 Shojiro Nemoto |
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| 作者单位： | Department of Electronic Science and Technology，Huaqiao University，Quanzhou 362011，Institute of Information Sciences and Electronics，University of Tsukuba，Tsukuba，Ibaraki 305-8573，Japan，Institute of Information Sciences and Electronics，University of Tsukuba，Tsukuba，Ibaraki 305-8573，Japan |
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| 基金项目： | This work was supported by Fujian Natural Science Foundation of China. J. Pu thanks Prof. Emil Wolf at the University of Rochester and Prof. Baida Lü at Sichuan University for their helpful discussions and encouragements. |
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| 摘 要： | The spectral changes of a partially coherent polychromatic light focused by an apertured lens with chromatic aberration are investigated. It is demonstrated that the spectrum in the focused field is different from that in the aperture. Comparing with the spectrum in the aperture, the spectrum in the focused field shifts to lower or higher frequency, which is defined as a spectral shift. The influence of chromatic aberration of the lens, the coherence of the partially coherent light in the aperture, the radius of the aperture, and the spectral width of the spectrum of the aperture on the spectral shift are investigated in detail. The numerical results show that these parameters affect the spectral shift noticeably.
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