Fig. 1. Pulsed stimulated Brillouin scattering microscopy. (a) Generation of high-peak-power laser pulses at 780 nm. SOA, semiconductor optical amplifier; SHG, second-harmonic generation. (b) Optical schematic of the pulsed SBM. PBS, polarized beam splitter; λ/4, quarter-wave plate; Objective 1, Objective 2, objective lenses [courtesy of Dr. Fan Yang (Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, China) for the figure].