Optical implementation of iterative Fourier transform algorithm using spatial light modulator

2006 ◽  
Author(s):  
Joonku Hahn ◽  
Hwi Kim ◽  
Yongjun Lim ◽  
Jihyun Lee ◽  
Byoungho Lee
Keyword(s):  
Fourier Transform ◽  
Spatial Light Modulator ◽  
Light Modulator

scholarly journals Adaptive Laser Beam Shaping for Laser Marking using Spatial light Modulator and Modified Iterative Fourier Transform Algorithm

2011 ◽  
Vol 12 ◽  
pp. 465-469 ◽  
Author(s):  
Rainer J Beck ◽  
Andrew J Waddie ◽  
Jonathan P Parry ◽  
Jonathan D Shephard ◽  
Mohammad R Taghizadeh ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Laser Beam ◽  
Spatial Light Modulator ◽  
Beam Shaping ◽  
Laser Beam Shaping ◽  
Light Modulator ◽  
Laser Marking ◽  
Adaptive Laser

scholarly journals Holographic Three-Dimensional Imaging of Terra-Cotta Warrior Model Using Fractional Fourier Transform

2019 ◽  
Vol 5 (8) ◽  
pp. 67
Author(s):  
Zhi-Fang Gao ◽  
Hua-Dong Zheng ◽  
Ying-Jie Yu
Keyword(s):  
Fourier Transform ◽  
Spatial Light Modulator ◽  
Fractional Fourier Transform ◽  
Three Dimensional ◽  
Experimental System ◽  
Speckle Noise ◽  
Light Modulator ◽  
Multiple Phase ◽  
3D Image Reconstruction ◽  
Phase Holograms

Holographic three-dimensional (3D) imaging of Terra-Cotta Warrior model using Fractional Fourier Transform is introduced in this paper. Phase holograms of Terra-Cotta Warrior model are calculated from 60 horizontal viewing-angles by the use of fractional Fourier transform (FRT). Multiple phase holograms are calculated for each angle by adding proper pseudorandom phase to reduce the speckle noise of a reconstructed image. Experimental system based on high-resolution phase-only spatial light modulator (SLM) is built for 3D image reconstruction from the calculated phase holograms. The texture of the Terra-Cotta Warrior model is rough. The calculation of rough texture is optimized in order to show better model details. The effects of computing distance and layer thickness on imaging quality are analyzed finally.

Fourier Transform Optical Beamformer Employing Spatial Light Modulator

2007 ◽  
Vol E90-C (2) ◽  
pp. 465-473 ◽  
Author(s):  
T. AKIYAMA ◽  
N. TAKEMURA ◽  
H. OH-HASHI ◽  
S. YAMAMOTO ◽  
M. SATO ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Spatial Light Modulator ◽  
Light Modulator
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