Nature Communications (Nov 2020)

Mode-locked short pulses from an 8 μm wavelength semiconductor laser

  • Johannes Hillbrand,
  • Nikola Opačak,
  • Marco Piccardo,
  • Harald Schneider,
  • Gottfried Strasser,
  • Federico Capasso,
  • Benedikt Schwarz

Journal volume & issue
Vol. 11, no. 1
pp. 1 – 7


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Producing pulses in the mid-IR often requires bulky sources and has been inaccessible with compact and versatile quantum cascade lasers (QCLs). Here, the authors demonstrate actively mode-locked, mid-IR QCL operation at room temperature.