Second-harmonic generation in quantum cascade lasers with electric field and current dependent nonlinear susceptibility

Second-harmonic generation in quantum cascade lasers with electric field and current dependent nonlinear susceptibility

The authors demonstrate a quantum cascade laser design with an integrated resonant nonlinearity for second-harmonic generation. Its nonlinear power conversion efficiency is strongly dependent on the injected current density due to an electric field and current dependent nonlinear susceptibility. Thi...

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Veröffentlicht in:Applied physics letters 2007-01, Vol.90 (3), p.031105-031105-3
Hauptverfasser: Qu, Dongxia, Xie, Feng, Shu, Gary, Momen, Safiyy, Narimanov, Evgenii, Gmachl, Claire F., Sivco, Deborah L.
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container_issue 3
container_start_page 031105
container_title Applied physics letters
container_volume 90
creator Qu, Dongxia
Xie, Feng
Shu, Gary
Momen, Safiyy
Narimanov, Evgenii
Gmachl, Claire F.
Sivco, Deborah L.
description The authors demonstrate a quantum cascade laser design with an integrated resonant nonlinearity for second-harmonic generation. Its nonlinear power conversion efficiency is strongly dependent on the injected current density due to an electric field and current dependent nonlinear susceptibility. This dependence produces an observed tenfold increase of the conversion efficiency over the current density range of 2.7 - 7.5 kA ∕ cm 2 . Furthermore, bidirectional lasing at widely different wavelengths is a side effect for this active region design.
doi_str_mv 10.1063/1.2431757
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title Second-harmonic generation in quantum cascade lasers with electric field and current dependent nonlinear susceptibility
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