Generation of tunable far-infrared radiation with a quantum cascade laser

Gianluca Gagliardi, Silvia Viciani, Massimo Inguscio, Paolo De Natale, Claire F. Gmachl, Federico Capasso, Deborah L. Sivco, James N. Baillargeon, Albert L. Hutchinson, Alfred Y. Cho

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


The generation of continuous wave (CW) tunable far infrared (FIR) radiation by mixing a quantum cascade laser (QCL) and a carbon dioxide laser in a W-Ni metal insulator metal diode was demonstrated. It was also demonstrated that the radiation could be used for spectroscopy by recording the J=8→9 rotational line of H 79Br. The FIR power generated by using two gas lasers was compared to the set up with the QCL. First-derivative line shapes were obtained by adding a sinusoidal signal at 1.1 kHz to the current ramp.

Original languageEnglish (US)
Pages (from-to)521-523
Number of pages3
JournalOptics Letters
Issue number7
StatePublished - Apr 1 2002

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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