Modification of spatial domain algorithms for apertureless light propagation
Light propagation algorithms in the spatial domain hold an implicit assumption that the calculation region represents a virtual aperture, i.e., the amplitude outside of the calculation region is zero. With typically bright objects on a dark background, this assumption is legitimate and the calculati...
Gespeichert in:
| Hauptverfasser: | , |
|---|---|
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2017
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| In: |
Applied optics
Year: 2016, Jahrgang: 56, Heft: 1, Pages: A8-A12 |
| ISSN: | 1559-128X |
| DOI: | 10.1364/AO.56.0000A8 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1364/AO.56.0000A8 Verlag, Volltext: https://www.osapublishing.org/ao/abstract.cfm?uri=ao-56-1-A8 
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| Verfasserangaben: | K.-H. Brenner and S. Mehrabkhani |
MARC
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| 520 | |a Light propagation algorithms in the spatial domain hold an implicit assumption that the calculation region represents a virtual aperture, i.e., the amplitude outside of the calculation region is zero. With typically bright objects on a dark background, this assumption is legitimate and the calculation is correct. With dark objects on a bright background, however, the assumption is violated and the calculation result is dominated by diffraction effects at a virtual aperture. This virtual aperture diffraction is especially a problem for pure phase elements, because the amplitude in and beyond the calculation region is a constant one. In this paper, we explain the background of the problem and present a general and effective method to remove this problem. | ||
| 534 | |c 2016 | ||
| 650 | 4 | |a Diffraction | |
| 650 | 4 | |a Light propagation | |
| 650 | 4 | |a Phase recovery | |
| 650 | 4 | |a Phase retrieval | |
| 650 | 4 | |a Propagation methods | |
| 650 | 4 | |a Spatial frequency | |
| 700 | 1 | |a Mehrabkhani, Soheil |e VerfasserIn |0 (DE-588)1145308457 |0 (DE-627)1005542473 |0 (DE-576)495690678 |4 aut | |
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