光电子学
多路复用器
材料科学
光学
级联
激光器
自由光谱范围
绝缘体上的硅
硅光子学
栅栏
硅
波长
多路复用
物理
计算机科学
化学
电信
色谱法
作者
Eric J. Stanton,Alexander Spott,Jon Peters,Michael L. Davenport,Aditya Malik,Nicolas Volet,Junqian Liu,Charles D. Merritt,I. Vurgaftman,Chul Han Kim,J. R. Meyer,John E. Bowers
出处
期刊:Photonics
[MDPI AG]
日期:2019-01-24
卷期号:6 (1): 6-6
被引量:10
标识
DOI:10.3390/photonics6010006
摘要
Multi-spectral midwave-infrared (mid-IR) lasers are demonstrated by directly bonding quantum cascade epitaxial gain layers to silicon-on-insulator (SOI) waveguides with arrayed waveguide grating (AWG) multiplexers. Arrays of distributed feedback (DFB) and distributed Bragg-reflection (DBR) quantum cascade lasers (QCLs) emitting at ∼4.7 µm wavelength are coupled to AWGs on the same chip. Low-loss spectral beam combining allows for brightness scaling by coupling the light generated by multiple input QCLs into the fundamental mode of a single output waveguide. Promising results are demonstrated and further improvements are in progress. This device can lead to compact and sensitive chemical detection systems using absorption spectroscopy across a broad spectral range in the mid-IR as well as a high-brightness multi-spectral source for power scaling.
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