Towards high-performance injectorless quantum cascade lasers in the mid infrared

S. Katz, A. Vizbaras, M. C. Amann

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


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.

Original languageEnglish
Title of host publicationOptoelectronic Materials and Devices V
StatePublished - 2011
EventOptoelectronic Materials and Devices V - Shanghai, China
Duration: 8 Dec 201012 Dec 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceOptoelectronic Materials and Devices V


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