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Towards High-Performance Injectorless Quantum Cascade Lasers in the Mid Infrared

机译:迈向中红外高性能无注入量子级联激光器

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Injectorless quantum cascade lasers are lately getting more and more into focus of research, as they promise lower threshold current densities and higher output powers and efficiencies. Although the research on them started seven years later in 2001 and was less intensive, they have achieved much lower threshold current densities with 0.45 kA/cm2 at 300 K compared to injectorbased devices. Additionally injectorless devices reached efficiencies and output powers in the important wavelength range between 8 and 12 μm comparable to best performing injectorbased devices. With 2 W per facet and an overall efficiency of 7 % around 9 μm, they show a strong potential regarding possible applications.
机译:无注入式量子级联激光器近来越来越受到研究的关注,因为它们承诺更低的阈值电流密度以及更高的输出功率和效率。尽管对它们的研究开始于七年后的2001年,但是强度不高,但是与基于喷射器的设备相比,它们在300 K时实现了更低的阈值电流密度,仅为0.45 kA / cm2。此外,与性能最佳的基于注射器的设备相比,无注射器的设备在8至12μm的重要波长范围内达到了效率和输出功率。每面2 W,总效率约为9μm的7%,因此它们在潜在应用方面显示出强大的潜力。

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