A European research team, with members from Belgium, France and Poland and under the direction of B-PHOT post-doc Nathalie Vermeulen, have succeeded in demonstrating highly efficient resonant-grating-based laser wavelength tuning in the mid-infrared spectral domain. The resonant grating they had fabricated for this purpose enabled them to tune a mid-infrared Cr:ZnSe laser with a high wavelength selectivity and with very low insertion losses, hence outperforming conventional tuning techniques based on prisms and standard metal gratings. This work was supported by the European Commission in the framework of the European Network of Excellence on Micro-Optics NEMO.
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