The nonlinear compression technique reduces the time-domain pulse width while simultaneously broadening the spectrum. This study employs multilayer thin plate for spectrum broadening. Through theoretical simulations, the spatial propagation of light, spectrum broadening upon traversing fused silica plates, and the optimal placement of these plates to achieve maximum spectral broadening without material damage are determined. Experimental results demonstrate that pulse width of a ytterbium-doped laser with a single pulse energy of 250 μJ and a repetition rate range of 20?200 kHz is compressed from 570 fs to 107 fs. After compression, the lateral beam quality factor is 1.384, the longitudinal beam quality factor is 1.413, the spot ellipticity is 0.978, and the compression efficiency is about 78.5%. By analyzing variations in beam waist at different power levels and their effects on beam quality, this work investigates methods to enhance beam quality while achieving narrower pulses and proposes corresponding optimization strategies.