Figure 1: TR and TSHG traces for the 10 nm thick Bi2Se3 film. | Nature Communications

Figure 1: TR and TSHG traces for the 10 nm thick Bi2Se3 film.

From: Nonlinear optical observation of coherent acoustic Dirac plasmons in thin-film topological insulators

Figure 1

TR and TSHG traces for the 10 nm Bi2Se3 film simultaneously measured with 250 fs step-size in the Pin−Spump−Pout polarization geometry at different pump/probe powers as indicated by the corresponding colours. The assignment of TR-peak, TSHG-peak, TR-BG, SHG-BG, TR-UBG and SHG-UBG intensities are shown. The normalized TR rotational anisotropy and TSHGRA patterns measured at the fixed pump-to-probe delay times as indicated by arrows are shown in insets of the corresponding TR and TSHG sections of the graph. The red curves present the best fit to the data. The TSHG section also indicates the frequency and damping coefficient of the oscillatory part of the TSHG trace.

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