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Fritz Kohlrausch Preis der Österreichischen Physikalischen Gesellschaft an Rinaldo Trotta

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Bildquelle: Robert Herbst, POINT OF VIEW (http://pov.at). ...  more of Fritz Kohlrausch Preis der Österreichischen Physikalischen Gesellschaft an Rinaldo Trotta (Titel)

Video Online: "Embedding a Single Quantum Dot into a Photonic Crystal Cavity"

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Artikel OÖNachrichten: "Rinaldo Trotta: Der 1,5-Millionen-Euro-Forscher"

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Our recent work (Nature Comm.7, 10375, 2016) on tunable entangled photons from QDs has been recently highlighted in the Laser Focus World magazine!

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Back Cover of Phys. Status Solidi A 3/2016

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Winner of Science Slam Linz and the Austrian Final in Vienna 2016: Martyna Grydlik!!!

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"Wenn es in der Physik funkt...", Artikel in der PRESSE

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Rotating anode

A versatile X-ray diffraction instrument with copper rotating anode powered by a 18kW Generator from Bruker AXS (M18XCE) is attached to a custom built 6-circle goniometer from Huber. Several optical elements, which can be combined in various ways allow the setup to be used in medium to high resolution configurations. The whole goniometer is motorized with stepper motors which are controlled by a custom built programmable logic controller rack built by the Forschungszentrum Rossendorf. The measurements are computer controlled by spec, which runs on a Ubuntu Linux PC. The 6-circle Goniometer enables measurements in various diffraction geometries:

  • coplanar X-ray diffraction
  • non-coplanar X-ray diffraction
  • grazing incidence diffraction
  • X-ray reflectivity
  • grazing incidence small angle X-ray scattering

Optics & Detectors

Primary beam

  • X-ray mirror: Xenocs double bent parabolic multilayer mirror (FOX 2D) for beam collimation
  • Monochromators: Two Ge (220) two-bounce channel cut monochromators, which can be used alone or in a Bartels monochromator configuration

Secondary beam

  • Analyzer (optional): a motorized analyzer stage for use on the detector arm is in development
  • Vantec-1 PSD: Linear detector with ~50µm channel width from Bruker AXS
  • Braun PSD: gas flushed linear detector
Both linear detectors have fixed slit systems attached and can also be used as point detectors

Sample holders

  • Huber goniometer head: modified version of the Huber 1003 manual goniometer head with two perpendicular cradles with common center of rotation
  • Evacuated sample environment with heater: An evacuated sample environment with heating possibility from room temperature up to 200°C (expandable if necessary). A Kapton window with >180° opening angle in the scattering plane allows the primary and scattered beam to enter the sample environment.
  • Motorized piezo stage: For accurate sample positioning an Piezo-driven goniometer head from attocube, with two cradles and two linear translation stages. The sample is mounted in the common center of rotation of the cradles which can be adjusted to the center of rotation of the 6-circle goniometer. The sample can be positioned with µm-precision. (in development)