Noise minimized high resolution digital holographic microscopy applied to surface topography
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ACHIMOVA, Elena; ABASHKIN, Vladimir; CLAUS, Daniel; GIANCARLO, Pedrini; SHEVKUNOV, Igor; KATKOVNIK, Vladimir. Noise minimized high resolution digital holographic microscopy applied to surface topography. In: Computer Optics. 2018, nr. 2(42), pp. 267-272. ISSN 0134-2452.
10.18287/2412-6179-2018-42-2-267-272
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Computer Optics
Numărul 2(42) / 2018 / ISSN 0134-2452

Noise minimized high resolution digital holographic microscopy applied to surface topography


DOI: 10.18287/2412-6179-2018-42-2-267-272
Pag. 267-272

Achimova Elena1, Abashkin Vladimir1, Claus Daniel2, Giancarlo Pedrini2, Shevkunov Igor34, Katkovnik Vladimir4
 
1 Institute of Applied Physics, Academy of Sciences of Moldova,
2 Institute of Applied Optics, University of Stuttgart,
3 Saint Petersburg State University, Saint Petersburg,
4 Tampere University of Technology
 
Disponibil în IBN: 12 mai 2018


Rezumat

The topography of surface relief gratings was studied by digital holographic microscopy. The applicability of the method for quantitative measurements of surface microstructure at nanoscale was demonstrated. The method for wavefront reconstruction of surface relief from a digital hologram recorded in off-axis configuration was also applied. The main feature is noise filtration due to the presence of noise in the recorded intensity distribution and the use of all orders of the hologram. Reconstruction results proved a better effectiveness of our approach for topography studying of relief grating patterned on a ChG As2S3 - Se nanomultilayers in comparison with standard Fourier Transform and Atom Force Microscope methods.

Cuvinte-cheie
Diffraction gratings, Digital holography, Digital image processing