Long-wavelength (λ≅11 μm) interminiband Fabry-Perot and distributed feedback quantum cascade lasers

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

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19 Scopus citations


Long-wavelength infrared interminiband quantum cascade lasers operating at λ = 11 μm are reported. The structures consist of twenty-five superlattice active regions alternated with electron injectors, all implemented with AlInGas/GaInAs grown lattice matched to InP by molecular beam epitaxy. Pulsed operation in Fabry-Perot devices has been achieved up to 135 K with 50 mW peak power at 90 K. Single-mode emission has been obtained with distributed feedback lasers based on loss gratings. These devices operated with a 30 dB side-mode suppression ratio and 50 mW peak power at liquid-nitrogen temperature. Temperature-tuning with a wavelength shift of 3.11×10-4 nm K-1 at cryogenic temperatures was demonstrated.

Original languageEnglish (US)
Pages (from-to)1333-1339
Number of pages7
JournalSemiconductor Science and Technology
Issue number11
StatePublished - Nov 1998
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry


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