Ultrafast optical switching in germanium across multiple wavelengths (IMAGE)

Waseda University

Ultrafast optical switching in germanium across multiple wavelengths

Caption

Researchers demonstrate ultrafast multivalley optical switching in germanium (Ge) using a single-color pulse laser. This breakthrough enables precise transparency control across multiple wavelengths, with potential applications in multiband communication and optical computing. The study also investigates intravalley and intervalley scattering processes within Ge's multivalley.

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Professor Junjun Jia from Waseda University, Japan

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