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Proceedings Paper

Effect of dummy area in the generation of computer-generated hologram to improve the reconstruction diffraction efficiency
Author(s): Yuki Misaki; Yosuke Koga; Shiyuan Yang; Seiichi Serikawa
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Paper Abstract

In most cases of the generation of computer-generated hologram, a zero-valued dummy area is usually added to the desired object in order to avoid the disturbance of high order reconstruction. The high order reconstruction not only disturbs the zero order reconstruction but also decreases the zero order reconstruction diffraction efficiency. In this study, we show a method to improve the zero order reconstruction diffraction efficiency by using a finite dummy area. According to the structure of a general computer-generated hologram, that is each calculated computer-generated hologram point has the same square size, then the high order reconstruction is the product of the zero order reconstruction and a sampling function with a scale factor. We use computer simulation to show the effect of dummy area in the improvement of the zero order reconstruction diffraction efficiency. According to our simulation results, we find that the zero order reconstruction diffraction efficiency increases as increasing the size of dummy area. In addition, we also find that the on-axis reconstruction has a higher reconstruction diffraction efficiency that the off-axis ones.

Paper Details

Date Published: 11 November 2014
PDF: 7 pages
Proc. SPIE 9271, Holography, Diffractive Optics, and Applications VI, 92712F (11 November 2014); doi: 10.1117/12.2071764
Show Author Affiliations
Yuki Misaki, Kyushu Institute of Technology (Japan)
Yosuke Koga, Kyushu Institute of Technology (Japan)
Shiyuan Yang, Kyushu Institute of Technology (Japan)
Seiichi Serikawa, Kyushu Institute of Technology (Japan)


Published in SPIE Proceedings Vol. 9271:
Holography, Diffractive Optics, and Applications VI
Yunlong Sheng; Chongxiu Yu; Changhe Zhou, Editor(s)

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