Second-harmonic generation in GaAs-based quantum-cascade lasers |
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| Authors: | M. Austerer, S. Schartner, C. Pflü gl, A.M. Andrews, T. Roch, W. Schrenk,G. Strasser |
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| Affiliation: | aZentrum für Mikro- und Nanostrukturen, Technische Universität Wien, Floragasse 7, 1040 Vienna, Austria;bLabSem, Centro de Estudos em Telecomunicacões, Pontificia Universidade Católica do Rio de Janeiro, Rua Marquês de São Vicente 225, Rio de Janeiro, RJ 22453-900, Brazil |
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| Abstract: | We report second-harmonic (SH) and sum-frequency generation in GaAs-based quantum-cascade lasers. A doping dependence study of the second-order susceptibility in one of the investigated structure is shown. We also demonstrate that grating-coupled surface emission is a highly efficient way to couple out the SH radiation. |
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| Keywords: | Quantum cascade lasers Nonlinear effects Semiconductor lasers |
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