Self-mode-locking in quantum cascade lasers

Roberto Paiella, Federico Capasso, Claire Gmachl, Deborah L. Sivco, James N. Baillargeon, Albert L. Hutchinson, Alfred Y. Cho, H. C. Liu

Research output: Contribution to conferencePaperpeer-review


We report on the first observation of mode-locking of quantum cascade lasers (QCLs). Both self-mode-locking (SML) and active mode-locking have been achieved, although this talk will primarily focus on SML. All the devices used in this work are 'standard' QCLs, except for their relatively long (≳ 3.5 mm) waveguides. Experimental observations indicate that the nonlinear loss mechanism responsible for SML results from self-focusing in the laser waveguide.

Original languageEnglish (US)
Number of pages2
StatePublished - 2000
Externally publishedYes
EventConference on Lasers and Electro-Optics (CLEO 2000) - San Francisco, CA, USA
Duration: May 7 2000May 12 2000


OtherConference on Lasers and Electro-Optics (CLEO 2000)
CitySan Francisco, CA, USA

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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