@inproceedings{277a98bb08664d4b988b8328ffb0c8da,
title = "Coupling strategies for coherent operation of quantum cascade ring laser arrays",
abstract = "We report the design, fabrication and operation of coherently coupled ring cavity surface emitting quantum cascade lasers, emitting at wavelength around 8 μm. Special emphasis is placed on the evaluation of optimal coupling approaches and corresponding parameters. Evanescent field coupling as well as direct coupling where both devices are physically connected is presented. Furthermore, exploiting the Vernier-effect was used to obtain enhanced mode selectivity and robust coherent coupling of two ring-type quantum cascade lasers. Investigations were performed at pulsed room-temperature operation.",
keywords = "Evanescent field coupling, coherent coupling, quantum cascade laser",
author = "Clemens Schwarzer and Y. Yao and E. Mujagi{\'c} and S. Ahn and W. Schrenk and J. Chen and Gmachl, {Claire F.} and G. Strasser",
year = "2011",
doi = "10.1063/1.3666710",
language = "English (US)",
isbn = "9780735410022",
series = "AIP Conference Proceedings",
pages = "989--990",
booktitle = "Physics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30",
note = "30th International Conference on the Physics of Semiconductors, ICPS-30 ; Conference date: 25-07-2010 Through 30-07-2010",
}