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Terahertz analytics for better plasmas

Terahertz generators: Gianqian Liao (left) and Yutong Li

Terahertz generators: Gianqian Liao (left) and Yutong Li.

By Hamish Johnston in BeijingĀ 

Today was the last day of the Fall Meeting of the Chinese Physical Society here in Beijing and this morning I grabbed a coffee with Yutong Li and Giuqian Liao. I was hoping to learn more about their work that we covered in May in “Coherent terahertz radiation created in laser plasmas“.

Their technique involves firing a powerful laser pulse at a thin metal foil. This creates a plasma in which electrons are accelerated to high energies before bursting out of the foil. When they emerge, coherent terahertz radiation is given off.

(more…)

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