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Widely tunable single-mode slot waveguide quantum cascade laser array
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DOI：10.1364/OE.446454.png)
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We report designs and experimental demonstrations of a widely tunable single-mode quantum cascade laser array based on slot waveguide structures in the mid-infrared region. The laser array device realized a continuous tuning range of 71 cm(-1) from 9.66 mu m to 10.37 mu m at 300 K only using the current tuning without any external heatsink temperature adjustments, in good agreement with the design. Stable single-mode operations free of undesired mode-hops have been obtained over the whole tuning range. Another slot waveguide QCL array with a 41 cm(-1) continuous tuning range around 7.3 mu m has also been realized with the same design principle, demonstrating the universal applicability of the array design. The broadly continuous tuning with simple processing makes the array device a suitable candidate for mid-infrared sensing and spectroscopy application. (c) 2021 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
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IF:
3.3
论文数:
6.1W
被引数:
14.3W
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