We report second-harmonic generation in GaAs-based quantum cascade lasers due to intersubband nonlinearities. Using a distributed feedback grating we obtain single-mode second-harmonic surface emission, where no fundamental light is emitted via the surface.
© 2006 Optical Society of America
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.5960) Lasers and laser optics : Semiconductor lasers
(190.0190) Nonlinear optics : Nonlinear optics
(190.5970) Nonlinear optics : Semiconductor nonlinear optics including MQW
M. Austerer, C. Pflügl, S. Golka, S. Schartner, W. Schrenk, T. Roch, A. M. Andrews, and G. Strasser, "Surface Emission of Intracavity Frequency-Doubled Light from Quantum Cascade Lasers," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, Technical Digest (CD) (Optical Society of America, 2006), paper CThM4.
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