Thomas Kreis (physicist)

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Thomas Circle

Thomas Kreis (* 1952 in Kassel ) is a German physicist. He is Professor of Physics at the University of Bremen and Senior Scientist at the Bremen Institute for Applied Beam Technology (BIAS).

Career

From 1970, Kreis studied mathematics and theoretical physics at the Georg-August University in Göttingen . In 1976 he finished his studies as a mathematician with a diploma thesis in statistical information theory with Rudolf Ahlswede . From 1977 to 1980 he was a research assistant at the Institute for Metrology in Mechanical Engineering, where he dealt with holographic interferometric measurement technology for the first time . Kreis was founded in 1986 with the dissertation evaluation of holographic interference patterns with methods of spatial frequency analysisat Fromund Hock at the University of Hanover as Dr.-Ing. PhD. Kreis has worked as a department head at BIAS since 1980, and he also teaches applied optics and physics for production technicians at the University of Bremen, where he qualified as a professor and qualified as a professor in the field of applied optics.

Thomas Kreis is married, has two sons and three grandchildren.

Act

Since the beginning of his professional career, Kreis has been researching in the field of holographic interferometry and related areas. Areas of application for this are form and deformation measurement technology, experimental stress analysis and non-destructive testing. He invented the Fourier transformation method for the automated evaluation of interference patterns, for which he was awarded the Rottenkolber Prize in 1987. Also for the quantitative holographic interferometric measurement technique he developed the phase shift method with constant but unknown phase shift. For the qualitative evaluation of the interference patterns, he introduced methods of artificial intelligence, in particular artificial neural networks. Since the mid-nineties, Kreis has made significant contributions to digital holography, in which high-resolution photo plates are no longer exposed and the objects to be measured are optically reconstructed, but the holograms recorded by means of a CCD , stored in the computer and the complex wave fields reconstructed numerically. On the one hand, he dealt with the mathematical fundamentals and, on the other hand, with applications in deformation measurement technology, the measurement of particles in flows, and the measurement of refractive index distributions, e.g. B. in optical fibers. Kreis is also researching the holographic rendering of three-dimensional scenes with a view to future holographic 3D television. He worked in various international consortia with such research objectives , such as the EU Network of Excellence 3DTV or the EU joint project REAL3D . Kreis invented phase holography without reference waves (RELPH), a process that could possibly be used for a future 3D TV. In addition to the holographic problems, Kreis also devotes himself to mathematical processes in surface metrology such as B. the wavelet transform. or the structural function circle has published around 100 publications - books, book chapters, scientific articles and conference papers. His monographs Holographic Interferometry: Principles and Methods and his Handbook of Holographic Interferometry deserve special mention . His work is cited more than 2500 times, he has achieved an h-index of 22, not counting his own quotations and quotations from employees of his own institute.

Individual evidence

  1. ↑ a b Thomas Kreis: Evaluation of holographic interference patterns with methods of spatial frequency analysis. Progress reports VDI, Series 8, No. 108, VDI-Verlag, 1986.
  2. ↑ a b Werner Jüptner, Thomas Kreis: An External Interface for Processing 3-D Holographic and X-Ray Images . Springer Science & Business Media, December 6, 2012, ISBN 978-3-642-83713-5 , pp. 9-44.
  3. ^ H. Kreitlow, Th. Kreis, W. Jüptner: Holographic interferometry with reference beams modulated by the object motion. Appl. Opt., Vol. 26, no. 19, 4256 - 4262, 1987.
  4. ↑ Th. Kreis: Digital Holography for NDT. (invited paper), Proceedings of INDIN2015 IEEE Intern. Conf. on Industrial Informatics. Cambridge UK, 707-712, 2015.
  5. ↑ a b Th. Kreis: Computer Aided Evaluation of Fringe Patterns. Optics and Lasers in Eng. vol. 19, 1-19, 1993.
  6. ↑ Th. Kreis: Digital holographic interference-phase measurement using the Fourier-transform method. Journ. Opt. Soc. Amer. A, vol. 3, no. 6, 847-855, 1986. Reprinted in P. Hariharan, D. Malacara, Eds .: Selected Papers on Interference, Interferometry, and Interferometric Metrology. SPIE Milestone Series, vol. MS 110, 337-345, 1996.
  7. ^ W. Jüptner, Th. Kreis, H. Kreitlow: Automatic evaluation of holographic interferograms by reference beam phase shifting. In: WF Fagan (Ed.): Industrial Applications of Laser Technology. Proc SPIE, vol. 398, 22-29, 1983.
  8. ^ Th. Kreis, W. Jüptner, R. Biedermann: Neural network approach to holographic nondestructive testing. Appl. Opt. Vol. 34, 1407-1415, 1995.
  9. ↑ a b Th. Kreis: Handbook of Holographic Interferometry. Wiley-VCH, 2005, doi: DOI: 10.1002 / 3527604154
  10. ↑ a b Th. Kreis: Holographic Interferometry: Principles and Methods. Akademie-Verlag 1996.
  11. ↑ J. Mundt, Th. Kreis: Digital holographic recording and reconstruction of large scale objects for metrology and display. Opt. Eng., 49 (12), 125801-1-125801-6, 2010.
  12. ^ Th. Kreis, W. Jüptner: The suppression of the dc-term in digital holography. Opt. Eng., Vol 36 (8), 2357-2360, 1997.
  13. ↑ D. Kayser, Th. Kreis, W. Jüptner: Compression of digital holographic data using is electromagnetic field properties. Proc. SPIE, vol. 5908, 59080C1-59080C9, 2005.
  14. ^ Th. Kreis: Digital Holography for Metrologic Applications. (Invited Paper). In: P. Jacquot, J.-M. Fournier (Ed.): Interferometry in Speckle Light. Springer Verlag, pp. 205-212, 2000.
  15. ^ M. Adams, Th. Kreis, W. Jüptner: Particle Analysis with Digital Holography. In: Laser Interferometry X: Applications. Proc. SPIE, vol. 4101B, 314-320, 2000.
  16. ↑ HH Wahba, Th. Kreis: Digital holographic interferometric characterization of bent optical fibers. J. Opt. A: Pure and Appl. Opt., 11, 105407 (11pp), 2009.
  17. ↑ HH Wahba, Th. Kreis: Characterization of graded index optical fibers by digital holographic interferometry. Appl. Opt., 48 (8), 1573-1582, 2009.
  18. ^ Th. Kreis: Holographic Approach to 3D Television. (invited paper), 22nd Congress of Intern. Commission of Optics: Light for the Development of the World, ICO22 Puebla, Proc. SPIE, vol. 8011, 80110H-1 - 80110H-10, 2011.
  19. ^ Th. Kreis: Application of digital holography: from microscopy to 3D television. J. Europ. Opt. Soc. Rap. Public. 7, 12006-1 - 12006-9, 2012, doi: 10.2971 / jeos.2012.12006
  20. ^ Th. Kreis: A New Method of Digital Holographic 3D-Display. Proceedings of INDIN2015 IEEE Intern. Conf. on Industrial Informatics. Cambridge UK, 673-676, 2015.
  21. ↑ Th. Kreis: 3-D Display by Referenceless Phase Holography. IEEE Trans. On Industrial Informatics, vol. 12, no. 2, 685 - 693, 2016.
  22. ↑ L. Rosenboom, Th. Kreis, W. Jüptner: Surface description and defect detection by wavelet analysis. Meas. Sci. Technol., 22, 045102 (9pp), 2011.
  23. ^ Th. Kreis, J. Burke, RB Bergmann: Surface characterization by structure function analysis. J. Europ. Opt. Soc. Rap. Public. 9, 14032-1 - 14032-8, 2014, doi: 10.2971 / jeos.2014.14032
personal data
SURNAME Circle, Thomas
BRIEF DESCRIPTION German physicist
DATE OF BIRTH 1952
PLACE OF BIRTH kassel