Dispersion of 20 fs pulses through band edges of cholesteric liquid crystals

Abstract : We demonstrate the ability to manipulate ultrashort pulses in cholesteric liquid crystals in the linear regime. We present an extensive analysis of the spectral changes undergone by 20fs pulses when propagating through band edges of cholesteric liquid crystals. The accurate quantification of the introduced optical dispersion opens the way to controlled stretching and compression of ultrashort pulses. The behaviors of cholesteric liquid crystal films with different thickness, bandgap and structural parameters (monotonic pitch versus pitch-gradient films) are compared. A statistical approach is disclosed to fidelize and deepen the set of experimental investigations.
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https://hal.archives-ouvertes.fr/hal-02189269
Contributeur : Michel Mitov <>
Soumis le : vendredi 19 juillet 2019 - 14:45:07
Dernière modification le : lundi 29 juillet 2019 - 15:46:03

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Maxim Neradovskiy, Adriana Scarangella, Aurélie Jullien, Michel Mitov. Dispersion of 20 fs pulses through band edges of cholesteric liquid crystals. Optics Express, Optical Society of America, 2019, 27 (15), pp.21794. ⟨10.1364/OE.27.021794⟩. ⟨hal-02189269⟩

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