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Deutscher MBE Workshop 2011

Wir danken allen Teilnehmern und Teilnehmerinnen für einen interessanten und stimulierenden Workshop:

05. - 06.10.2011, Jerusalemkirche, Berlin

Deutscher MBE Workshop

Wir setzen das erfolgreiche Format dieser Reihe von Veranstaltungen fort, die zuletzt in Bochum (2009), Zürich (2008) und Jülich (2007) abgehalten wurden.

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International workshop on atomic-scale manipulation and spectroscopy (AMS 2011)

The workshop was held on October 13 and 14, 2011, at NTT Atsugi R&D center.

The workshop is organized by NTT, Japan and PDI, Germany.

We thank all participants who made this workshop a real success!

Workshop webpage
Impressum

gesetzlich vorgesehene Pflichtangaben zur Kennzeichnung und rechtliche Hinweise zur Internetpräsenz (2010)

Fourier-transform infrared spectroscopy

The Fourier-transform infrared spectroscopy is used for investigations of predominantly terahertz and mid-infrared GaAs-based quantum-cascade lasers (QCLs). We focus on studies of the laser performance for different QCL designs including the doping concentration and the waveguide structure, the driving current, and the operating temperature. In particular, effects of coupled multi-sections in QCLs on the laser modes are investigated. Furthermore, intersubband transitions, free-carrier and plasmon excitations, phonons and polaritons in GaAs, Ga(As,N), and GaN-based nanostructures grown in the institute have been studied.

Specifications of the Bruker IFS 66v

Specifications of the Bruker IFS 120HR

 

Example:

  Irlab

Suppression of longitudinal modes of two-sectioned, coupled-cavity THz QCLs (TSCC) with a total length of the laser ridge of 5 mm for different ratios of the length of the two subcavities L2/L1 as indicated. Due to interference effects in the TSCC QCL, the mode spacing Δν is determined by L1+L2, whereas the number of suppressed modes (mode spacing between major modes Δνmaj) is determined by the ratio L2/L1.

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