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Berlin 2008 – scientific programme

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O: Fachverband Oberflächenphysik

O 90: Methods: Scanning Probe Techniques II

O 90.2: Talk

Friday, February 29, 2008, 10:30–10:45, MA 042

Novel design for luminescence detection in the low temperature STM — •Klaus Kuhnke, Alexander Kabakchiev, and Klaus Kern — Max-Planck Institut für Festkörperforschung, Stuttgart

We present a novel design for the detection of luminescence from the STM tunnel junction. Three optical paths are introduced into an existing low temperature STM. We employ free optical light propagation using lenses and mirrors which fully preserve essential information carried by the light like angular distribution, polarization, and emission time. Care has been taken to minimize the thermal input through the light paths into the liquid He cryostat. Possible operation modes are discussed and demonstrated by preliminary measurements.

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