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URN: urn:nbn:de:swb:90-721676
Originalveröffentlichung
DOI: 10.1038/s41598-017-04568-x
Scopus
Zitationen: 3
Web of Science
Zitationen: 1

Opposite-view digital holographic microscopy with autofocusing capability

Zheng, Juanjuan; Gao, Peng; Shao, Xiaopeng

Abstract:
Digital holographic microscopy (DHM) has its intrinsic ability to refocusing a sample by numerically propagating an object wave from its hologram plane to its image plane. In this paper opposite-view digital holographic microscopy (OV-DHM) is demonstrated for autofocusing, namely, digitally determining the location of the image plane, and refocusing the object wave without human intervention. In OV-DHM, a specimen is illuminated from two sides in a 4π-alike configuration, and two holograms are generated and recorded by a CCD camera along two orthogonal polarization orientations. The image plane of the sample is determined by finding the minimal variation between the two object waves, and consequently refocusing is performed by propagating the waves to the image plane. Furthermore, the field of view (FOV) of OV-DHM can be extended by combining the two object waves which have an angle in-between. The proposed technique also has the potential to reduce speckle noise and out-of-focus background.


Zugehörige Institution(en) am KIT Institut für Angewandte Physik (APH)
Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator ISSN: 2045-2322

KITopen-ID: 1000072167
HGF-Programm 43.23.01 (POF III, LK 01)
Erschienen in Scientific reports
Band 7
Heft 1
Seiten Art.Nr.: 4255
Nachgewiesen in Web of Science
Scopus
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