Visible optical parametric oscillation in LiB3O5

Abstract
The successful operation of a visible optical parametric oscillator (OPO) using a LiB3O5 crystal as the nonlinear element is reported. An energy conversion efficiency as high as 22% for a signal wave has been obtained in a 15.9‐mm‐long crystal. This OPO can generate visible output energy of 2.7 mJ and be continuously tuned from 435 to 1922 nm.