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Proceedings Paper

Adaptive phase-shifting digital holography compensating positional inaccuracy and tilting of optics
Author(s): Joonku Hahn; Hwi Kim; Eun-Hee Kim; Junghyun Park; Byoungho Lee
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Paper Abstract

The phase-shifting errors mainly result from the imprecise movement of phase-shifter and the vibration of system. These geometric errors are classified into the positional inaccuracy and tilting of optics. And they can be represented as the longitudinal and transversal displacements of interferograms on the hologram plane. In this paper, we propose adaptive phase-shifting digital holography compensating these two displacements and this proposed method is based on genetic algorithm for finding optimized variables corresponding to real system. By computer simulations, the deteriorations in reconstruction image are modeled and the chromosomes are constituted. We find the fittest solution compensating the longitudinal and transversal displacements experimentally and present the reconstruction images by encoding the resultant holograms on a spatial light modulator.

Paper Details

Date Published: 25 August 2008
PDF: 8 pages
Proc. SPIE 7056, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications II, 70561N (25 August 2008); doi: 10.1117/12.796422
Show Author Affiliations
Joonku Hahn, Seoul National Univ. (Korea, Republic of)
Hwi Kim, Seoul National Univ. (Korea, Republic of)
Eun-Hee Kim, Seoul National Univ. (Korea, Republic of)
Junghyun Park, Seoul National Univ. (Korea, Republic of)
Byoungho Lee, Seoul National Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 7056:
Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications II
Shizhuo Yin; Ruyan Guo, Editor(s)

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