Generation of light through second-order nonlinear processes in Quantum Cascade lasers

Claire Gmachl, Alexey Belyanin, Nina Owschimikow, Vitaly Kocharovsky, Federico Capasso, Deborah L. Sivco, Milton L. Peadbody, A. Michael Sergent, Alfred Y. Cho

Research output: Contribution to journalConference articlepeer-review


We demonstrate efficient intracavity nonlinear interaction of laser modes in quantum cascade (QC) lasers with resonant nonlinear optical intersubband transitions. Sum-frequency and second-harmonic generation at 4.1 and 3.6 and 4.7 μm wavelength has been demonstrated for a two-wavelength QC laser emitting at the fundamental wavelengths 7.1 and 9.5 μm. In a structure optimized for second harmonic generation, we measure 1.5 μW of nonlinear power at 3.7 μm wavelength together with 930 mW of fundamental power at 7.5 μm wavelength. The experimental results are in very good agreement with the calculations.

Original languageEnglish (US)
Pages (from-to)50-52
Number of pages3
JournalOSA Trends in Optics and Photonics Series
StatePublished - 2003
Externally publishedYes
EventConference on Lasers and Electro-Optics (CLEO); Postconference Digest - Baltimore, MD, United States
Duration: Jun 1 2003Jun 6 2003

All Science Journal Classification (ASJC) codes

  • General Engineering


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