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Post-fabrication wavelength selection and spectral narrowing of Quantum Cascade lasers via application of a shallow distributed Bragg reflector

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Abstract

Application of a shallow distributed Bragg reflector ion milled on a tenth of the laser ridge leads to spectral narrowing, a 10 fold reduction in full width half maximum and ~12dB side mode suppression, of Fabry Perot type QC lasers.

© 2012 Optical Society of America

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