April 14, 2015

Ultrafast photodetectors with graphene

(April 14, 2015)  Scientists affiliated with Europe’s Graphene Flagship develop a photodetector that converts incident light into electrical signals on femtosecond timescales, enabling ultrafast operation speeds for electronic circuits in optical communications and various other applications.

The conversion of light into electricity underpins a range of technologies that includes solar cells, digital cameras and optical-fibre communications, and in most cases operation speed is critical. For example, lasers currently used in optical communications, medical imaging and surgery can generate light pulses a picosecond (10-12 s) and less in length.

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