R
Richard Kowarschik
Researcher at University of Jena
Publications - 213
Citations - 1962
Richard Kowarschik is an academic researcher from University of Jena. The author has contributed to research in topics: Photorefractive effect & Interferometry. The author has an hindex of 23, co-authored 211 publications receiving 1850 citations. Previous affiliations of Richard Kowarschik include Schiller International University & Bosch.
Papers
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Partially coherent light-emitting diode illumination for video-rate in-line holographic microscopy.
TL;DR: It is demonstrated how low-light-level, non-laser sources enable holographic imaging with a video frame rate, an intermediate SNR of 8 dB, and a volume of coherence of 3.4×10(4) μm3.
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Study of PQ/PMMA photopolymer. Part 2: experimental results
Yue Qi,Elen Tolstik,Haoyu Li,Jinxin Guo,Michael R. Gleeson,Vladislav Matusevich,Richard Kowarschik,John T. Sheridan +7 more
TL;DR: In this article, an extended 1D nonlocal photo-polymerization driven diffusion (NPDD) model was developed, giving the temporal and spatial variations of each chemical component concentration within a phenanthrenequinone-doped poly(methyl methacrylate) (PQ/PMMA) material layer.
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Widefield microscopy with infinite depth of field and enhanced lateral resolution based on an image inverting interferometer
TL;DR: In this paper, an interferometric method was proposed to gain a theoretically infinite depth of field by measuring the complex coherence function using an image inverting interferometer, which yields an enhanced lateral resolution.
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Digital synthesis of multiple off-axis holograms with overlapping Fourier spectra
TL;DR: In this article, the phase difference between the Fourier spectrum is corrected by subtracting the phase values of the overlapping areas and plotting them into a histogram, and the amplitude adjustment between different spectral sections is demonstrated.
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Optical activity in photorefractive Bi12TiO20
Ekaterina Shamonina,V. P. Kamenov,Klaus H. Ringhofer,G. Cedilnik,Armin Kiessling,Richard Kowarschik,David J. Webb +6 more
TL;DR: In this article, the influence of optical activity on two-wave mixing in photorefractive BTO and BSO crystals in the absence of an applied field is studied both theoretically and experimentally.