Aculight Corp., a developer of laser technology in Bothell, Wash., and Koheras A/S, a manufacturer of fiber lasers in Birkerød, Denmark, have entered into an exclusive marketing agreement. Koheras will sell and market Aculight’s Argos optical parametric oscillators in several European countries, including the UK, Germany, France, Austria and Switzerland. The Argos instruments offer enabling capabilities for high-resolution spectroscopy applications.