New methods in recording and reconstruction of digital holograms

Zsolt Papp; Janos Kornis; Balazs Gombkoto

doi:10.1117/12.503361

30 May 2003 New methods in recording and reconstruction of digital holograms

Zsolt Papp, Janos Kornis, Balazs Gombkoto

Proceedings Volume 5144, Optical Measurement Systems for Industrial Inspection III; (2003) https://doi.org/10.1117/12.503361
Event: Optical Metrology, 2003, Munich, Germany

Abstract

Digital holography gives new capabilities to the measurements of size, position, shape or velocity of different objects. In general in-line arrangement is used with a CCD device recording the interference pattern and the reconstruction is performed by numerical methods in computer. Some new ideas were used to improve the process of exposure and calculation techniques. The phase-shift technique is widely used in digital holography. Now it is proposed to use the two-reference-beams arrangement, which can replace the phase-shift methods at different cases. Three holograms -- the interference pattern of the object and the two reference waves and the three intensity distribution (of the beams, separately) are recorded and the phase evaluation can be done numerically. The advantage of FFT-algorithm is also applied reducing the computer running time in reconstruction of the image. We have developed another computational method for the reconstruction using Monte-Carlo simulation.

Citation Download Citation

Zsolt Papp, Janos Kornis, and Balazs Gombkoto "New methods in recording and reconstruction of digital holograms", Proc. SPIE 5144, Optical Measurement Systems for Industrial Inspection III, (30 May 2003); https://doi.org/10.1117/12.503361

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