Journal ArticleDOI
Analysis of enhanced light emission from highly strained germanium microbridges
Martin J. Süess,Martin J. Süess,R. Geiger,Renato Minamisawa,G. Schiefler,G. Schiefler,Jacopo Frigerio,Daniel Chrastina,Giovanni Isella,Ralph Spolenak,Jérôme Faist,Hans Sigg +11 more
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TLDR
In this paper, high-strained germanium on silicon samples with up to 3.1% uniaxial strain is fabricated and then investigated by Raman spectroscopy.Abstract:
Highly strained germanium on silicon samples with up to 3.1% uniaxial strain are fabricated and then investigated by Raman spectroscopy. During optical pumping, changes in both the emission wavelength and output power are observed, indicating that bandgap modification and optical gain are occurring.read more
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Proceedings ArticleDOI
1D photonic crystal GeSn-on-insulator nanobeam laser
Hyo-Jun Joo,Youngmin Kim,Daniel Burt,Yong-Joo Jung,Ling Zhang,Melvina Chen,Samuel Parluhutan,Dong-Ho Kang,Chul Won Lee,Simone Assali,Zoran Ikonic,Oussama Moutanabbir,Yong-Hoon Cho,Chuan Seng Tan,Donguk Nam +14 more
TL;DR: In this paper , a 1D photonic crystal nanobeam laser with a very small device footprint (7 μm2) and a compact active area (1.2 μm) on a GeSn-on-insulator substrate is presented.
Proceedings ArticleDOI
Germanium devices for integrated photonic circuits
TL;DR: In this article, a wet-etch technique was developed to pattern thin germanium films and to form tapered regions of Ge, both important for the fabrication of Ge photonic devices.
Journal ArticleDOI
Direct bandgap GeSn nanowires enabled with ultrahigh tension from harnessing intrinsic compressive strain
Daniel Burt,Hyo-Jun Joo,Youngmin Kim,Yong-Joo Jung,Melvina Chen,Manlin Luo,Dong-Ho Kang,Simone Assali,Ling Zhang,Bongkwon Son,Weijun Fan,Oussama Moutanabbir,Zoran Ikonic,Chuan Seng Tan,Yi-Chiau Huang,Donguk Nam +15 more
TL;DR: In this paper , a geometric strain-inversion technique was proposed to harness the harmful compressive strain to achieve beneficial tensile strain in GeSn nanowires, drastically increasing the directness of the band structure.
Proceedings ArticleDOI
Cavity mode analysis of highly strained direct bandgap germanium micro-bridge cavities
F. Armand-Pilon,T. Zabel,Esteban Marin,Christopher Bonzon,Samuel Tardif,Alban Gassenq,Nicolas Pauc,Vincent Reboud,Vincent Calvo,J.M. Hartmann,Julie Widiez,Alexei Chelnokov,Jérôme Faist,Hans Sigg +13 more
TL;DR: In this article, a clear cavity mode pattern was obtained using excitation power dependent photoluminescence spectroscopy, which indicates a loss reduction with increasing free carrier density.
Posted Content
Spin photovoltaic cell
Federico Bottegoni,Michele Celebrano,Monica Bollani,Paolo Biagioni,G. Isella,Franco Ciccacci,Marco Finazzi +6 more
TL;DR: In this paper, the spintronic equivalent of a photovoltaic cell is realized by modulating the phase and amplitude of the light wavefronts entering a semiconductor (germanium) with a patterned metal overlayer (platinum).
References
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