Crystal We could supply many kinds of crystal, such as follows: NLO crystal, including BBO, BIBO, KDP-DKDP, KTP, LiNbO3 and MgO-LiNbO3, they are usually used to harmonic generation; Birefringent Crystal, including a-BBO, Calcite and YVO4; Laser Crystal, including ND-GdVO4, ND-YAG and ND-YV04; E-O Crystal, LiNbO3 SAW Wafer; Passive Crystal, Cr4? YAG.