Spectral control of high order harmonics through non-linear propagation effects
نویسندگان
چکیده
High harmonic generation (HHG) in crystals has revealed a wealth of perspectives such as all-optical mapping the electronic band structure, ultrafast quantum information and creation novel all-solid-state attosecond sources. Significant efforts have been made to understand microscopic aspects HHG crystals, whereas macroscopic effects, non-linear propagation effects driving pulse inside dense solid media its impact on process is often overlooked. In this work, we study by comparing two materials with distinct optical properties, silicon (Si) zinc oxide (ZnO). By scanning focal position 85 fs, 2.123 $\mu$m wavelength pulses (Z-scan) reveal spectral shifts generated harmonics. We interpret overall blueshift emitted spectrum an imprint field modulation occurring during crystal. This supported numerical simulations. demonstrates that through manipulation fundamental precise control solids can be realised. method could offer robust way tailor spectra for range spectroscopic applications.
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ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2021
ISSN: ['1520-8842', '0003-6951', '1077-3118']
DOI: https://doi.org/10.1063/5.0053152