Flat-topped spectrum obtained from partially coherent hollow Gaussian Schell-model beams passing through a slit |
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| Authors: | Sinan Zhao Hong Guo |
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| Institution: | a CREAM Group, State Key Laboratory of Advanced Optical Communication Systems and Networks (Peking University) and Institute of Quantum Electronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
b Shanghai Institute of Optics and Fine Mechanics, CAS, Shanghai 201800, China |
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| Abstract: | The anomalous spectral behaviors of partially coherent polychromatic hollow Gaussian Schell-model beams (HGSMBs) diffracted by a slit are investigated. Besides spectral switches, asymmetrical dual-peak spectral split and multi-peak spectral split are observed. In the vicinity of the positions where spectral switches occur, flat-topped spectrum can be obtained, the bandwidth of which is adjustable by changing the transverse coherence width and the observation position. The flat-topped spectrum has potential application for creating probe beams in optical metrology systems and generating broadband optical sources in fiber optic sensor interface systems. |
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| Keywords: | 42 25 Kb 42 25 Fx |
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