Fig. 1. (a) The optical setup of the RMO based TG-SRSI. P1, aluminum-coated, fused silica plate; P2, nonlinear material; A, black plate; L, lens; M, reflective plane mirror; S, spectrometer; a and b are cross sections of the portions indicated by the arrows and c is the black plate. All are seen from the right side. (b) BOXCARS phase-matching geometry.

Fig. 2. (a) Spectral intensity of the test beam (red curve), the TG signal (blue curve), and the interference between them (black curve) measured directly with the spectrometer. (b) The spectrum retrieved (black solid curve) and the spectral phase (black dotted curve) by using TG-SRSI. The spectrum retrieved (blue solid curve) and the spectral phase retrieved (blue dotted curve) by using SHG-FROG. The red curve is the spectrum of the test beam measured directly by the spectrometer. (c) The temporal profiles (solid curves) and phases (dashed curves) retrieved by using TG-SRSI (black curves) and SHG-FROG (blue curves). (d) Spectra of three TG signals measured directly by the spectrometer. Spectra from the bottom to the top correspond to when the input pulse energies are 65, 75, and 85 nJ, respectively.