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Optical reconstruction of transparent objects with phase-only SLMs.
Stoykova, Elena,Yara?, Fahri,Yontem, Ali ?zg?r,Kang, Hoonjong,Onural, Levent,Hamel, Philippe,Delacr?taz, Yves,Bergo?nd, Isabelle,Arfire, Cristian,Depeursinge, Christian Optical Society of America 2013 Optics express Vol.21 No.23
<P>Three approaches for visualization of transparent micro-objects from holographic data using phase-only SLMs are described. The objects are silicon micro-lenses captured in the near infrared by means of digital holographic microscopy and a simulated weakly refracting 3D object with size in the micrometer range. In the first method, profilometric/tomographic data are retrieved from captured holograms and converted into a 3D point cloud which allows for computer generation of multi-view phase holograms using Rayleigh-Sommerfeld formulation. In the second method, the microlens is computationally placed in front of a textured object to simulate the image of the textured data as seen through the lens. In the third method, direct optical reconstruction of the micrometer object through a digital lens by modifying the phase with the Gerchberg-Saxton algorithm is achieved.</P>