Single-mode surface-plasmon laser

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

Research output: Contribution to journalArticlepeer-review

125 Scopus citations


Surface-plasmon modes confined at the interface between a metal and a semiconductor are exploited in place of conventional dielectric waveguides for the realization of a λ ∼ 17 μm semiconductor laser. The device is based on the quantum cascade concept and outperforms with its 38 mW of peak output power and 240 K of maximum operating temperature any previous semiconductor laser of comparable wavelength. Pure single-wavelength emission with a tuning rate of ∼1 nm/K is achieved using Bragg reflection from a two-metal grating that modulates the skin depth of the surface plasmons.

Original languageEnglish (US)
Pages (from-to)2164-2166
Number of pages3
JournalApplied Physics Letters
Issue number16
StatePublished - Apr 17 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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