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http://dx.doi.org/10.3807/KJOP.2006.17.6.519

A Study on Lohmann Type Computer Generated Holograms Using a Circular Cell  

Seo, Choon-Su (Department of Laser and Optical Information Engineering, Chongju University)
Jeong, Man-Ho (Department of Laser and Optical Information Engineering, Chongju University)
Publication Information
Korean Journal of Optics and Photonics / v.17, no.6, 2006 , pp. 519-524 More about this Journal
Abstract
In general, the Lohmann-type binary hologram represents its amplitude and phase by using the rectangular cell. In this paper, we adapts a circular cell to represents the amplitude and phase of holograms. In order to compare the characteristics of the circular cell with the rectangular one, we analyzed the results based on the computer simulations and various optical experiments. The results show that a clearer reconstructed image can be obtained by dividing one cell into many pixels. In the case of a uniform reconstructed image, the rectangular cell is better than the circular cell. However, as for the brightness of the reconstructed image, the circular cell is better than the rectangular one.
Keywords
CGH; Lohmann-type binary hologram; Rectangular cell; Circular cell;
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