English: a) Complete schematic of the system. The beamsplitter pair followed by a glass rod converts a single femtosecond pulse into a temporally linearly chirped pulse train with neighboring sub-pulses separated by t_sp, which can be tuned according to the experiment.

b) Detailed illustration of the spectral dispersion scheme (black dashed box). c) Composition of a raw CUSP image in s-View, which includes both spectral dispersion by the grating in the horizontal direction and temporal shearing by the streak camera in the vertical direction.

BS, beamsplitter; DMD, digital micromirror device; G, diffraction grating; L, lens; M, mirror.^[1]