Fig. 1. Structural schematic of three-lens slit spatial filter

Fig. 2. Aberration effects of different lenses on system parameters in three-lens slit spatial filter. (a) Effect of aberrations of Lens-I on near-field contrast of output beam; (b) effect of aberrations of Lens-I on intensity on inner edge of Slit-I; (c) effect of aberrations of Lens-I on intensity on inner edge of Slit-II; (d) effect of aberrations of Lens-II on near-field contrast of output beam; (e) effect of aberrations of Lens-II on intensity on inner edge of Slit-I; (f) effect of aberrations of L

Fig. 3. Focal line images of super-Gaussian beam formed on filter Slit-I plane with different aberrations of 10λ on Lens-I. (a) Without aberration; (b) with spherical aberration; (c) with x-direction coma; (d) with y-direction coma; (e) with field curvature; (f) with x-direction distortion; (g) with y-direction distortion; (h) with x-direction astigmatism; (i) with y-direction astigmatism