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We present details of compact x-ray generation setup design, construction and spatio-temporal femtosecond laser pulse characterization. We show measurements of femtosecond laser induced x-ray fluorescence spectra and time traces, together with analysis and discussion.
Recent experiments have shown that the high temperature incommensurate (I) charge density wave (CDW) phase of 1T-TaS2 can be photoinduced from the lower temperature, nearly commensurate (NC) CDW state. Here we report a time-resolved x-ray diffraction study of the growth process of the photoinduced I-CDW domains. The layered nature of the material r...
We present a simple apparatus for femtosecond laser induced generation of X-rays. The apparatus consists of a vacuum chamber containing an off-axis parabolic focusing mirror, a reel system, a debris protection setup, a quartz window for the incoming laser beam, and an X-ray window. Before entering the vacuum chamber, the femtosecond laser is expand...
The Prototypical magnetic memory shape alloy Ni$_2$MnGa undergoes various phase transitions as a function of temperature, pressure, and doping. In the low-temperature phases below 260 K, an incommensurate structural modulation occurs along the  direction which is thought to arise from softening of a phonon mode. It is not at present clear how...
Nanoparticles of Ti3O5 have been reported to show a permanent photoinduced phase transition at room temperature. This suggests that light-induced phase transformations of Ti3O5 nanoparticles may be promising for technological applications. Here we report a photoinduced semiconductor-to-metal phase transition from beta-Ti3O5 to lambda-Ti3O5 nanopart...