We present time-resolved dual-angle single-wavelength pump-probe study of the reflectivity of femtosecond laser excited bismuth crystal. The recovered real and imaginary parts of the dielectric function show complex a transition to a new quasi-stable excited state at about 20 ps. This state lasts for about 4 ns after the excitation and is not an intermediate state between the solid and the liquid phase. The results suggest that the photo-excited state does not correspond to neither a warm nor a liquid phase, and open general questions on photoexcited phase transition.
CITATION STYLE
Rode, A. V., Boschetto, D., Garl, T., & Rousse, A. (2009). Transient Dielectric Function of Fs-Laser Excited Bismuth. In Springer Series in Chemical Physics (Vol. 92, pp. 217–219). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-3-540-95946-5_70
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