Sacher Lasertechnik LLC, a Buena Park, Calif.-based service site for diode laser products, and GWU Lasertechnik GmbH of Erftstadt, Germany, have signed an exclusive agreement for the distribution and representation of optical parametric oscillators (OPOs) in the US, Canada and Mexico. GWU Lasertechnik manufactures the oscillators as well as nonlinear devices, and components for diode-pumped solid-state lasers.