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High-order ghost imaging with N-colour thermal light |
Liu Qian(刘骞), Luo Kai-Hong(罗开红), Chen Xi-Hao(陈希浩), and Wu Ling-An(吴令安)† |
Laboratory of Optical Physics, Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China |
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Abstract High-order ghost imaging with thermal light consisting of N different frequencies is investigated. The high-order intensity correlation and intrinsic correlation functions are derived for such N-colour light. It is found that they are similar in form to those for the monochromatic case, thus most of the conclusions we obtained previously for monochromatic Nth-order ghost imaging are still applicable. However, we find that the visibility of the N-colour ghost image depends strongly on the wavelength used to illuminate the object, and increases as this wavelength increases when the test arm is fixed. On the contrary, changes of wavelength in the reference arms do not lead to any change of the visibility.
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Received: 02 April 2010
Revised: 19 April 2010
Accepted manuscript online:
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 60978002), and the National Fundamental Research Programme of China (Grant Nos. 2006CB921107 and 2010CB922904). |
Cite this article:
Liu Qian(刘骞), Luo Kai-Hong(罗开红), Chen Xi-Hao(陈希浩), and Wu Ling-An(吴令安) High-order ghost imaging with N-colour thermal light 2010 Chin. Phys. B 19 094211
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