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In this paper, we performed the femtosecond time-resolved X-ray diffraction on the 60-fs laser irradiated a CdTe single crystal and detected the coherent longitudinal optical (LO) phonon (5.07 THz) at Brilliuon zone center. The coherent LO phonon is also confirmed by using an optical reflectivity measurement
Two temporally separated ultrashort pulses are interfered spectrally to obtain two-dimensional phase distribution of plasma waves generated by a terawatt laser. This technique allows micron-scale resolution in space with 14-fs time resolution.
Summary form only given. In recent years high-order harmonic generation has become a promising method for the production of coherent XUV or soft X-ray radiation. In this study we demonstrate a pulse width measurement of the high-order harmonic pulse using the change of the bound-free absorption by the femtosecond dynamics of field ionization. The 9th harmonic of Ti:sapphire is absorbed by neutral...
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