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27 February 2014 High-power CW performance of 7-stage interband cascade lasers
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We report a narrow-ridge interband cascade laser emitting at λ ≈ 3.5 μm that produces up to 592 mW of cw power with a wallplug efficiency of 10.1% and beam quality factor of M2 = 3.7 at T = 25 °C. Furthermore, devices from a large number of wafers with similar 7-stage designs and wavelengths spanning 2.8-4.7 μm exhibit consistently higher pulsed external differential quantum efficiencies than earlier state-of-the-art ICLs.
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C. L. Canedy, J. Abell, C. D. Merritt, W. W. Bewley, C. S. Kim, M. Kim, I. Vurgaftman, and J. R. Meyer "High-power CW performance of 7-stage interband cascade lasers", Proc. SPIE 9002, Novel In-Plane Semiconductor Lasers XIII, 90021C (27 February 2014);

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