AlGaAs guided-wave second-harmonic generation at 2.23  μm from a quantum cascade laser

We demonstrate the frequency doubling of a quantum cascade laser in a multilayered, partially oxidized GaAs/AlOx waveguide. Using the waveguide width to fulfill the phase-matching condition, the second harmonic is generated in the wavelength range between 2.2 and 2.4 μm, where not many semiconductor...

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Bibliographic Details
Published in:Applied optics (2004) 2014-09, Vol.53 (25), p.5615-5619
Main Authors: Ozanam, C, Savanier, M, Lemaître, A, Almuneau, G, Carras, M, Favero, I, Ducci, S, Leo, G
Format: Article
Language:English
Subjects:
Engineering Sciences
Materials
Optics
Photonic
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Summary:We demonstrate the frequency doubling of a quantum cascade laser in a multilayered, partially oxidized GaAs/AlOx waveguide. Using the waveguide width to fulfill the phase-matching condition, the second harmonic is generated in the wavelength range between 2.2 and 2.4 μm, where not many semiconductor sources are commercially available to date. We discuss the impact of a few fabrication and experimental parameters on the conversion efficiency, an essential step toward the improvement and practical implementation of this proof-of-principle semiconductor microsystem.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.53.005615