Towards integrated tunable all-silicon free-electron light sources
Name
s41467-019-11070-7.pdf
Description
Published version
Size
1.69 MB
Format
Adobe PDF
Checksum (MD5)
2c55dd2ae80c19ce18aa93e8aecd2f16
Author(s)
Roques-Carmes, Charles
Yang, Yi
Massuda, Aviram
Keathley, Phillip D.
Zaidi, Aun
Yang, Yujia
Joannopoulos, John D.
Berggren, Karl K.
Kaminer, Ido
Soljačić, Marin
Date Issued
July 18, 2019
Journal
Nature communications
Publisher
Springer Science and Business Media LLC
Citation
Roques-Carmes, Charles et al. "Towards integrated tunable all-silicon free-electron light sources." Nature communications 10 (2019): 3176 © 2019 The Author(s)
Version
Final published version
Abstract
Extracting light from silicon is a longstanding challenge in modern engineering and physics. While silicon has underpinned the past 70 years of electronics advancement, a facile tunable and efficient silicon-based light source remains elusive. Here, we experimentally demonstrate the generation of tunable radiation from a one-dimensional, all-silicon nanograting. Light is generated by the spontaneous emission from the interaction of these nanogratings with low-energy free electrons (2–20 keV) and is recorded in the wavelength range of 800–1600 nm, which includes the silicon transparency window. Tunable free-electron-based light generation from nanoscale silicon gratings with efficiencies approaching those from metallic gratings is demonstrated. We theoretically investigate the feasibility of a scalable, compact, all-silicon tunable light source comprised of a silicon Field Emitter Array integrated with a silicon nanograting that emits at telecommunication wavelengths. Our results reveal the prospects of a CMOS-compatible electrically-pumped silicon light source for possible applications in the mid-infrared and telecommunication wavelengths.
Subjects
General Biochemistry, Genetics and Molecular Biology
General Physics and Astronomy
General Chemistry
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1038/s41467-019-11070-7
