Please use this identifier to cite or link to this item:
|Title:||Studies on aperture synthesis in digital Fresnel holography||Authors:||Hao, Yan
Asundi, Anand Krishna
|Keywords:||DRNTU::Engineering::Mechanical engineering||Issue Date:||2011||Source:||Hao, Y., & Asundi, A. K. (2011). Studies on aperture synthesis in digital Fresnel holography. Optics and lasers in engineering, 50(4), 556-562.||Series/Report no.:||Optics and lasers in engineering||Abstract:||Aperture synthesis can improve image resolution in digital holography by increasing the numerical aperture of the system. In this paper, we show that both the lateral resolution and image field of view can be enhanced at the same time using a more general Fresnel holography setup and hologram stitching. The impact of aperture synthesis on the lateral resolution is investigated both theoretically and experimentally. In the experiment, the synthesis is executed by moving the compact digital holographic system in two directions. Nine holograms are recorded and stitched into one hologram. The reconstruction results show that expanding aperture improves the lateral resolution. The lensless Fresnel holography used in this paper is demonstrated to have the ability to provide a larger numerical aperture and can compress the object spectrum in recording process.||URI:||https://hdl.handle.net/10356/99609
|DOI:||http://dx.doi.org/10.1016/j.optlaseng.2011.09.007||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||MAE Journal Articles|
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.