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- W3178095512 abstract "Since its first observation, a decade ago, high harmonic generation (HHG) in crystals has proved to be an efficient, controllable and compact source of coherent XUV radiation. In this thesis, we investigate HHG in 2D materials, particularly graphene, and in different semiconductor crystals mainly zinc oxide, silicon, gallium arsenide and magnesium oxide. We find that the laser properties, such as its intensity, polarization and ellipticity, and the crystal properties are interrelated. Moreover, we shed the light on the role of the linear and nonlinear propagation effects mainly the Kerr effect, upon laser interaction with the crystal, which can significantly influence the high harmonic generation efficiency. Although this presents major limitations, we show that in some cases it turns out to be an advantage. Finally, we demonstrate the manipulation of the harmonic radiation at the source of the emission by patterning nanostructures to confine and enhance nanojoule laser pulses, and generate harmonic beams carrying orbital angular momentum. Lastly, we successfully image a micrometer-sized sample by the coherent diffractive imaging (CDI) technique based on solid-state harmonics." @default.
- W3178095512 created "2021-07-19" @default.
- W3178095512 creator A5059445864 @default.
- W3178095512 date "2020-12-10" @default.
- W3178095512 modified "2023-09-27" @default.
- W3178095512 title "Polarization Spectroscopy of High Order Harmonic Generation in Semiconductors" @default.
- W3178095512 hasPublicationYear "2020" @default.
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