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A robust and tuneable mid-infrared optical switch enabled by bulk Dirac fermions

Chunhui Zhu1,2, Fengqiu Wang1,2, Yafei Meng1,2

  • 1School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China.

Nature Communications
|January 21, 2017
PubMed
Summary

Bulk Dirac fermions in cadmium arsenide (Cd3As2) offer a novel ultrafast optical switching mechanism for mid-infrared pulsed lasers. Doping provides tunable control over photocarrier relaxation times, enabling new laser development.

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