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Characterization of the transient absorption property of AuNRs. (a) The dependence of the TA intensity on the excitation power of the pump beam (1064 nm). (b) The dependence of the TA intensity on the excitation power of the probe beam (850 nm). (c) The dependence of the TA intensity on the probe wavelength. (d) The time-resolved TA intensity (red), with the stimulated Raman scattering signal of dodecane to present the system response (blue).
