Resonant Second-Order Nonlinear Optical Processes in Quantum Cascade Lasers

Nina Owschimikow, Claire Gmachl, Alexey Belyanin, Vitaly Kocharovsky, Deborah L. Sivco, Raffaele Colombelli, Federico Capasso, Alfred Y. Cho

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We demonstrate an efficient intracavity nonlinear interaction of laser modes in a specially adapted quantum cascade laser. A two-wavelength quantum cascade laser structure emitting at wavelengths of 7.1 and [Formula presented] included cascaded resonant optical intersubband transitions in an intracavity configuration leading to resonantly enhanced sum-frequency and second-harmonic generation at wavelengths of 4.1, 3.6, and [Formula presented], respectively. Laser peak optical powers of 60 and 80 mW resulted in 30 nW of sum-frequency signal and 10–15 nW of second-harmonic signal, both in good agreement with theoretical calculations.

Original languageEnglish (US)
Number of pages1
JournalPhysical review letters
Volume90
Issue number4
DOIs
StatePublished - Jan 1 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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