J
Jifeng Liu
Researcher at Dartmouth College
Publications - 249
Citations - 10333
Jifeng Liu is an academic researcher from Dartmouth College. The author has contributed to research in topics: Photonics & Direct and indirect band gaps. The author has an hindex of 40, co-authored 220 publications receiving 9300 citations. Previous affiliations of Jifeng Liu include Tsinghua University & University of Delaware.
Papers
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High-performance Ge-on-Si photodetectors
TL;DR: In this article, the authors summarized the major developments in Ge-on-Si photodetectors, including epitaxial growth and strain engineering, free-space and waveguide-integrated devices, as well as recent progress in Geon-On-Si avalanche photodets.
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Ge-on-Si laser operating at room temperature.
TL;DR: What is believed to be the first experimental observation of lasing from the direct gap transition of Ge-on-Si at room temperature using an edge-emitting waveguide device is reported.
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Tensile-strained, n-type Ge as a gain medium for monolithic laser integration on Si
Jifeng Liu,Xiaochen Sun,Dong Pan,Xiaoxin Wang,Lionel C. Kimerling,Thomas L. Koch,Jurgen Michel +6 more
TL;DR: Results indicate that tensile strained n-type Ge is a good candidate for Si integrated lasers, despite of the free carrier absorption loss.
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Waveguide-integrated, ultralow-energy GeSi electro-absorption modulators
Jifeng Liu,M. Beals,Andrew Pomerene,Sarah Bernardis,Rong Sun,Jing Cheng,Lionel C. Kimerling,Jurgen Michel +7 more
TL;DR: In this paper, a waveguide-integrated GeSi electroabsorption modulator on silicon with an ultra-low energy consumption of 50 fJ-1bit was presented, operating in the spectral range of 1539-1553 nm.
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High performance, waveguide integrated Ge photodetectors
Donghwan Ahn,Ching-yin Hong,Jifeng Liu,Wojciech Giziewicz,M. Beals,Lionel C. Kimerling,Jurgen Michel,Jian Chen,Franz X. Kärtner +8 more
TL;DR: A Ge p-i-n photodetector that is monolithically integrated with silicon oxynitride and silicon nitride waveguides, which facilitates the integration with CMOS circuits.