CSB3O5 - A NEW NONLINEAR-OPTICAL CRYSTAL

On the basis of the anionic group theory, a new nonlinear optical crys tal cesium triborate, (CsB3O5, CBO) was discovered. Single crystals of CBO in centimeter size were grown from a stoichiometric melt. The tra nsparent range of CBO covers from 170 to 3000 nm. The preliminary meas urement of its second harmonic generation coefficient shows that its d 14 is approximately 0.468 X d11 (beta-BaB2O4). Its measured damage thr eshold is as high as 26 GW/cm2 at 1.053 mum, 1.0 ns.