Please use this identifier to cite or link to this item:
|Title:||The phase error reduction using window functions in digital holography||Authors:||Yan, Facai
|Issue Date:||2015||Source:||Yan, F., Yan, H., & Asundi, A. (2015). The phase error reduction using window functions in digital holography. Proceedings of SPIE - The International Conference on Photonics and Optical Engineering (icPOE 2014), 9449, 94490O-. doi:10.1117/12.2074711||Abstract:||Digital holography (DH) is a 3D imaging technique with a theoretical axial accuracy of better than 1-2 nanome-ters. However, practically, the axial error has been quoted to be tens of nanometers which is much larger than the theoretical value. Previous studies of the axial error mainly focused on the phase error introduced by lens. However, it is found that CCD aperture size is also an important contributors to axial error by our group. It is necessary to investigate the reduction approach of such axial error. The most possible connection between the limited CCD aperture size and the axial error is the diffraction effect. Window functions once have been applied to digital holograms for diffraction suppression and improve the lateral resolution of the intensity image. How-ever, their impacts on phase image and the associated axial dimension measurement are still unknown. In this paper, window functions are applied to digital holograms for phase/axial error reduction. Both simulation and experiment are performed. Moreover, the relation between axial error and window functions is also illustrated by the mathematical formulas derived in the theory. And all the results validate that the window functions can reduce the axial error of digital holography.||URI:||https://hdl.handle.net/10356/89558
|DOI:||http://dx.doi.org/10.1117/12.2074711||Rights:||© 2015 Society of Photo-optical Instrumentation Engineers (SPIE). This paper was published in Proceedings of SPIE - The International Conference on Photonics and Optical Engineering (icPOE 2014) and is made available as an electronic reprint (preprint) with permission of Society of Photo-optical Instrumentation Engineers (SPIE). The published version is available at: [http://dx.doi.org/10.1117/12.2074711]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.||Fulltext Permission:||open||Fulltext Availability:||With Fulltext|
|Appears in Collections:||MAE Conference Papers|
Files in This Item:
|The phase error reduction using window functions in digital holography.pdf||1.71 MB||Adobe PDF|
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.