Mainz 2026 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 8: Nanophotonics and Integrated Photonics II
Q 8.7: Vortrag
Montag, 2. März 2026, 18:45–19:00, P 3
Imaging of Nanoholes with Digital Holography — •Lukas Limmer1, Abhishek Anand2, Wladimir Schoch2, Ulrich Rädel3, Johannes Hecker Denschlag2, and Harald Giessen1 — 14th Physics Institute, University of Stuttgart, Germany — 2Institute for Quantum Matter, University of Ulm, Germany — 3Frauenhofer IOF, Jena, Germany
We experimentally investigate a recently proposed low photon number method for photographing nanohole grid patterns on a two-dimensional opaque phase mask with digital holography. The experimental setup back-illuminates the phase mask with a weak coherent light source and imprints the phase information of the nanoholes diffraction pattern on a strong coherent reference beam on a CCD-camera chip. First measurements suggest that a reconstruction of the original hole pattern is possible for less than 100 scattered photons per hole. This shows potential for imaging ultra-cold atoms in optical lattices.
Keywords: Digital Holography; Nanoholes; ultra cold atoms