In this article, we report the demonstration of a quantum cascade laser emitting at λ ≈ 4.9 μm with a wall-plug efficiency of ∼31% and an output power of ∼23 W in pulsed operation at room temperature with 50 cascade stages (N_s). With proper fabrication and packaging, this buried ridge quantum cascade laser with a cavity length of 5 mm delivers more than ∼15 W output power, and its wall-plug efficiency exceeds ∼20% at 100 °C. The experimental results of the lasers are well in agreement with the numerical predictions.

中文翻译：

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室温量子级联激光器，壁塞效率约31％

在本文中，我们报告了在室温下以50级联级（N _s）进行脉冲操作时，以λ≈4.9μm发射的量子级联激光器的演示，其壁塞效率约为31％，输出功率约为23 W. ）。通过适当的制造和封装，这种腔长为5 mm的埋入式脊量子级联激光器可提供约15 W以上的输出功率，并且其壁塞效率在100°C时可超过约20％。激光器的实验结果与数值预测吻合良好。