Laser Made of Germanium and Tin (IMAGE)

Forschungszentrum Juelich

Laser Made of Germanium and Tin

Caption

Scanning electron microscopy images: The germanium-tin layer is only a few micrometres thick and is applied to a "stressor layer" made of silicon nitride and an aluminium base for improved heat dissipation (left) and then coated with silicon nitride (right). Orienting the germanium-tin compound along the wider atomic distances in the crystal lattice of the silicon nitride leads to stresses in the embedded material, which ultimately cause optical amplification.

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Copyright: Forschungszentrum Jülich / Nils von den Driesch

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