Dr. Giancarlo Pedrini

Dr. Giancarlo Pedrini

Dr. Giancarlo Pedrini

Institut für Technische Optik at the University of Stuttgart

Giancarlo Pedrini received his MS degree in physics from the Swiss Federal Institute of Technology (ETH-Zurich) in 1982 and his PhD degree in Optical Sciences from the University of Neuchatel (Switzerland) in 1990. He joined the Institut für Technische Optik at the University of Stuttgart in 1991. His research areas include: digital holography, vibration analysis, shape measurement, non destructive testing, measurement of the elastic parameters of biological samples, endoscopy, and phase retrieval.

MBL meets OPTIMESS 2019 lecture:

"Digital Holography digital holography for erosion measurements under extreme environmental conditions inside the ITER tokamak"

In the International Thermonuclear Experimental Reactor under construction in southern France, there will be a need for continuous measuring of the erosion at the wall, after the reactor starts operating. A two-wavelength interferometric technique based on digital holography is proposed for the erosion measurement. This technique has the ability to tackle the challenging environmental conditions within the reactor by a long-distance measurement, where a relay optic will be used for imaging the investigated surface on the detector. We will show that the shape measurements of objects located at a distance of more than 20 m from the measuring head can be carried out in a short time (100μs) by the two-wavelength interferometric technique. A depth accuracy of10μm is achieved.