Long wavelength superlattice quantum cascade lasers at λ ≃17 μm

Alessandro Tredicucci, Claire Gmachl, Federico Capasso, Deborah L. Sivco, Albert L. Hutchinson, Alfred Y. Cho

Research output: Contribution to journalArticlepeer-review

90 Scopus citations


We report the realization of a semiconductor injection laser based on intraband transitions with emission wavelengths extending beyond the atmospheric windows. The structure uses the quantum cascade scheme with "chirped" superlattices as active material. Laser action in pulsed operation is achieved at λ ≃ 17 μm up to 150 K, with peak output powers of ∼ 12 mW at cryogenic temperatures.

Original languageEnglish (US)
Pages (from-to)638-640
Number of pages3
JournalApplied Physics Letters
Issue number5
StatePublished - Feb 1 1999
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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