A novel computation method of 3-D hologram based on iterative Fourier transform

PEI Chuang; JIANG Xiao-yu; WANG Jia; ZONG Yan-tao

doi:10.7510/jgjs.issn.1001-3806.2013.03.018

LASER TECHNOLOGY > 2013 > 37(3): 347-352. > DOI: 10.7510/jgjs.issn.1001-3806.2013.03.018

PEI Chuang, JIANG Xiao-yu, WANG Jia, ZONG Yan-tao. A novel computation method of 3-D hologram based on iterative Fourier transform[J]. LASER TECHNOLOGY, 2013, 37(3): 347-352. DOI: 10.7510/jgjs.issn.1001-3806.2013.03.018

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A novel computation method of 3-D hologram based on iterative Fourier transform

Department of Control Engineering, Academy of Armored Force Engineering, Beijing 100072, China

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Revised Date: August 30, 2012
Published Date: May 24, 2013

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Abstract

In order to calculate hologram of 3-D objects quickly,a novel computer-generated hologram method based on iterative Fourier transform was proposed.Considering Fourier transform characteristics of a lens,parallel light reconstruction was changed to point lamp-house irradiation by introducing coding spherical phase factors.Adding the spherical phase factor to iterative computation process to represent depth characteristics,the holograph of 3-D object was obtained.A lookup table was used to reduce the influence of phase factor operation and improve the speed of iterative calculation.The experiment based on spatial light modulator shows that the convergent speciality of this algorithm is good and computational holograph can reconstruct matching object layer in different distance,which has three-dimensional vision effect.
- hologram,
- digital hologram,
- iterative Fourier transform,
- phase factor,
- 3-D image

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