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Spectral self-tuning of the ultrashort pulse during propagation in Al:ZnO/ZnO metamaterial at the epsilon near zero spectral point

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Abstract

Numerical FDTD study shows that initial 100 fs Gaussian pulse with central frequency beyond epsilon-near-zero point experiences spectral self-tuning during propagation in Al:ZnO/ZnO. The resulting spectral shift depends strongly on optical loss.

© 2019 The Author(s)

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