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Improving Visibility of Diffraction Pattern with Pseudo-Thermal Light |
| GAO Lu;XIONG Jun;ZHANG Shu-Heng;WANG Wei;WANG Kai-Ge |
| Department of Physics, Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing 100875 |
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| Cite this article: |
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GAO Lu, XIONG Jun, ZHANG Shu-Heng et al 2008 Chin. Phys. Lett. 25 1277-1280 |
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Abstract We report an experimental observation of Poisson's spot with pseudo-thermal light. The experimental results show that the diffraction pattern disappears in the intensity distribution behind the opaque disc but emerges through both auto-correlation and cross-correlation intensity measurements. The auto-correlation scheme can take care of both better visibility and higher resolution of the diffraction pattern under the condition that the thermal light source has a larger spectral bandwidth.
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42.50.Dv
42.50.Ar
42.30.Va
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Received: 13 December 2007
Published: 31 March 2008
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