Schwarz Benedikt, Wang Christine A, Missaggia Leo, Mansuripur Tobias S, Chevalier Paul, Connors Michael K, McNulty Daniel, Cederberg Jeffrey, Strasser Gottfried, Capasso Federico
Institute of Solid State Electronics, TU Wien, 1040 Vienna, Austria.
Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, Massachusetts 02420, United States.
ACS Photonics. 2017 May 17;4(5):1225-1231. doi: 10.1021/acsphotonics.7b00133. Epub 2017 Apr 18.
Bifunctional active regions, capable of light generation and detection at the same wavelength, allow a straightforward realization of the integrated mid-infrared photonics for sensing applications. Here, we present a high performance bifunctional device for 8 μm capable of 1 W single facet continuous wave emission at 15 °C. Apart from the general performance benefits, this enables sensing techniques which rely on continuous wave operation, for example, heterodyne detection, to be realized within a monolithic platform and demonstrates that bifunctional operation can be realized at longer wavelength, where wavelength matching becomes increasingly difficult and that the price to be paid in terms of performance is negligible. In laser operation, the device has the same or higher efficiency compared to the best lattice-matched QCLs without same wavelength detection capability, which is only 30% below the record achieved with strained material at this wavelength.
能够在同一波长下进行光产生和检测的双功能有源区，为传感应用的集成中红外光子学提供了一种直接的实现方式。在此，我们展示了一种用于8μm的高性能双功能器件，在15°C时能够实现1W的单端面连续波发射。除了一般的性能优势外，这使得依赖连续波操作的传感技术（例如外差检测）能够在单片平台上实现，并证明了双功能操作可以在更长波长下实现，而在该波长下波长匹配变得越来越困难，且在性能方面所付出的代价可以忽略不计。在激光操作中，该器件与没有相同波长检测能力的最佳晶格匹配量子级联激光器相比具有相同或更高的效率，仅比在该波长下用应变材料所达到的记录低30%。
