Optical setup of the bulk KTP NOPA at Temple University.[1] HWP – half-wave plate; PBS – polarizer-beamsplitter; DS – delay stage; SF18 – equilateral SF18-glass prisms; S – 2-mm sapphire plate; L – lens; F – filter for blocking λ<1000 nm; P-ZnSe – polycrystalline ZnSe; FS – fused-silica Brewster-angle cut prisms; AC, autocorrelator. Also shown is the zx-plane of KTP. Double arrows and circles with dots represent the polarization in the plane of and perpendicular to the drawing, respectively.
Reference:
Isaienko, O. and Borguet, E., Generation of ultra-broadband pulses in the near-IR by non-collinear optical parametric amplification in potassium titanyl phosphate. Optics Express 16(6), 3949-3954 (2008)