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High quality computational ghost imaging using multi-fluorescent screen

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Abstract

An alternative scheme for improvement of computational ghost imaging (GI) features is proposed based on a three-color fluorescent screen. While a monochrome fluorescent screen does not enhance the quality of ghost images in comparison with the ordinary GI technique, employment of a multi-fluorescent screen can be very effective. It is shown that the visibility, signal to noise ratio (SNR), and contrast to noise ratio (CNR) of the resultant ghost images are improved when a multi-fluorescent screen is used. In particular, the results prove 65%, 36%, and 95% improvement for visibility, SNR, and CNR over 2000 shots, respectively. Also shown is the possibility of reconstructing ghost images over a reduced number of shots (as small as 25) by increasing the number of colors on the screen, whereas ordinary GI is not possible with such a small number of shots. The results from simulations are checked with conducted experiments, and a good agreement between them is observed.

© 2015 Optical Society of America

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