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Multi-Wavelength QCL Based MIR Spectroscopy for Fluids and Gases

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Abstract

We demonstrate multi-color DFB QCLs with separated electrical pumping for independent single-mode emission of several wavelengths from the same ridge. This will be implemented in our mid-infrared spectroscopy sensors for gases (CO2) and liquids (cocaine).

© 2013 Optical Society of America

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