Laser & Optoelectronics Progress, Volume. 48, Issue 2, 20901(2011)
Optoelectronic Reconstruction of Three-Dimensional Scenes Based on Multiple Fractional-Fourier-Transform Holograms
Optoelectronic reconstruction experiment is carried out for holographic display of three-dimensional (3D) scene based on multiple fractional Fourier transform (FrFT). By setting different fractional orders according to different diffraction distances, multiple fractional Fourier transform in each object plane is calculated and superposed to the whole complex amplitude. The amplitude-type and phase-type holograms are obtained by encoding the whole complex amplitude in hologram plane. In order to suppress the speckle noise, a pseudorandom phase factor is added to object planes in calculating sequential holograms. An experimental system is set up for optoelectronic reconstruction based on phase-type liquid crystal spatial light modulator (LC-SLM). Speckle index and correlation coefficient between the reconstructed images from single hologram and sequential holograms are analyzed. The experimental results show that, by calculating sequential holograms of 3D object and reconstructing with phase-type LC-SLM , the speckle noise and conjugate image can be well suppressed and the quality of reconstructed image is improved significantly.
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Zheng Huadong, Dai Linmao, Wang Tao, Yu Yingjie. Optoelectronic Reconstruction of Three-Dimensional Scenes Based on Multiple Fractional-Fourier-Transform Holograms[J]. Laser & Optoelectronics Progress, 2011, 48(2): 20901
Category: Holography
Received: Aug. 5, 2010
Accepted: --
Published Online: Jan. 13, 2011
The Author Email: Huadong Zheng (zhenghuadong_08@163.com)