Far-IR quantum cascade lasers at 21.5 μm wavelength

R. Colombelli, F. Capasso, Claire F. Gmachl, M. Wanke, A. Tredicucci, A. L. Hutchinson, A. M. Sergent, D. L. Sivco, A. Y. Cho

Research output: Contribution to conferencePaperpeer-review


Quantum cascade lasers operating at a maximum wavelength of 21.5 μm were analyzed. The waveguide design consists of a surface-plasmon guide on top and 1.5 μm of InGaAs n-doped up to 7×1016 cm-3 on the bottom to achieve dielectric confinement. The injectors were designed to avoid tunneling of carriers to higher energy states. The lasers can be used in THz imaging and spectroscopy.

Original languageEnglish (US)
Number of pages2
StatePublished - 2001
EventConference on Lasers and Electro-Optics (CLEO) - Baltimore, MD, United States
Duration: May 6 2001May 11 2001


OtherConference on Lasers and Electro-Optics (CLEO)
Country/TerritoryUnited States
CityBaltimore, MD

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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