Long wavelength quantum cascade lasers

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

Research output: Contribution to journalArticlepeer-review


This paper reports the realization of a long-wavelength quantum cascade laser employing so-called 'chirped' superlattices and operating at λ approx. 17 μm. This represents the first demonstration of a semiconductor injection laser based on intra-band transitions at wavelengths beyond the atmospheric windows. The structure was grown by molecular beam epitaxy in the InGaAs/InAlAs material system lattice matched to InP substrate.

Original languageEnglish (US)
Pages (from-to)43-44
Number of pages2
JournalLEOS Summer Topical Meeting
StatePublished - Jan 1 1999
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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