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Conferences > CLEO_FS > 2023 > FF1G > FF1G.7

Ultrafast long–wavelength excitation of coherent optical phonons in bismuth

Azize Koç, Isabel Gonzalez-Vallejo, Matthias Runge, Ahmed Ghalgaoui, Klaus Reimann, Laurenz Kremeyer, Fabian Thiemann, Michael Horn-von Hoegen, Klaus Sokolowski-Tinten, Michael Woerner, and Thomas Elsaesser

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Abstract

We present femtosecond x-ray diffraction experiments performed on single crystal bismuth excited by 5 µm laser pulses, and nonlinear THz experiments. Our results point to a new excitation quantum pathway at longer excitation wavelengths allowing for coherent phonon excitation at the X point in the Brillouin zone.

© 2023 The Author(s)

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