Schematic drawing of TSG setup and TSG signals. (a) kA and kB represent both the pump beams, kP is the probe beam, and kR is the reference beam. (b) TSG signal as a function of delay time at room temperature for two excitation powers: 2 and 18 mW.
Hu et al. Nanoscale Research Letters 2011 6:149 doi:10.1186/1556-276X-6-149