optique

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[Optics] – Flat lens gets ahead of the optical curve 21 février 2020

The word « lens » takes its name from the Latin word for lentil. Both are both hemispheric shapes bound together on their flat surface. So a « flat lens » sounds like a contradiction of terms. Yet that is exactly what Andrei Faraon is working on at California Institute of Technology’s Nanoscale and Quantum Optics Lab.

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[Optics] – Shaping waveforms 22 février 2020

Chemical reactions are determined at their most fundamental level by their respective electronic structure and dynamics. Steered by a stimulus such as light irradiation, electrons rearrange themselves in liquids or solids. This process takes only a few hundred attoseconds, whereby one attosecond is the billionth part of a billionth of a second.

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