Cross-spectrally pure light,cross-spectrally pure fields and statistical similarity in electromagnetic fields |
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| Authors: | Jingjing Chen RongSheng Lu Feinan Chen Jia Li |
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| Affiliation: | 1. School of Instrument Science and Opto-electronic Engineering, Hefei University of Technology, Hefei, Chinajingjingchen@hfut.edu.cn;3. School of Instrument Science and Opto-electronic Engineering, Hefei University of Technology, Hefei, China;4. Department of Optical Engineering, Nanjing University of Science and Technology, NanJing, China;5. Institute of Fiber Optics Communication and Information Engineering, College of Information Engineering, Zhejiang University of Technology, Hangzhou, China |
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| Abstract: | This paper describes the concept of cross-spectrally pure light, implications of statistical similarity of an optical field on its cross-spectral purity and cross-spectrally pure fields. First, the concept of cross-spectral purity of light is analysed in the space-frequency domain by taking into account the vectorial nature of the radiation, and the conditions and reduction formula are obtained. Then, by utilizing statistical similarity, the relationship between cross-spectral purity and spatial coherence is explored in the electromagnetic field. Last, the conditions for cross-spectrally pure fields are discussed, the polychromatic plane wave and the far field produced by a planar, secondary, stochastic electromagnetic source are studied as examples, and moreover, the relationship between cross-spectral purity and spatial coherence, which we have drawn, is verified during the study. |
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| Keywords: | cross-spectrally pure coherence statistical similarity electromagnetic field |
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