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Waveguide-integrated van der Waals heterostructure photodetector at telecom wavelengths with high speed and high responsivity
The low carrier mobilities of TMDCs pose a challenge for applications in high-speed photodetection. Integrating vertical two-dimensional heterostructures with photonic waveguides allows the intrinsic speed limitations to be overcome and record-high photodetection bandwidths to be achieved.
- Nikolaus Flöry
- , Ping Ma
- & Lukas Novotny
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Pushing the limits of optical information storage using deep learning
A machine-learning approach based on digital information encoding using silicon nanostructures enables a quasi-error-free read-out of sequences of up to 9 bit.
- Peter R. Wiecha
- , Aurélie Lecestre
- & Guilhem Larrieu
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Evolutionary multi-objective optimization of colour pixels based on dielectric nanoantennas
A numerical technique that can self-adapt to experimental limitations can guide the design of photonic nanostructures by optimizing multiple parameters.
- Peter R. Wiecha
- , Arnaud Arbouet
- & Vincent Paillard
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Electronic control of optical Anderson localization modes
Injecting charge carriers into p–n diodes embedded in an optical waveguide can switch Anderson localization modes on and off.
- Shayan Mookherjea
- , Jun Rong Ong
- & Lo Guo-Qiang
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News & Views |
Moving into the red
Can silicon ever be a true direct-bandgap semiconductor? The first observation of a new, short-lived photoluminescence band from silicon nanocrystals offers fresh hope.
- Dmitry Kovalev
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Red spectral shift and enhanced quantum efficiency in phonon-free photoluminescence from silicon nanocrystals
An ultrafast visible band in the photoluminescence spectrum of silicon nanocrystals increases in intensity and shifts to longer wavelengths as the size of the nanocrystals decreases.
- W. D. A. M. de Boer
- , D. Timmerman
- & T. Gregorkiewicz
High quality factor phase gradient metasurfaces