GWU-Lasertechnik Vertriebsges. mbH was founded in 1988 as a sales company for lasers and laser accessories. Our broad portfolio includes laser crystals, nonlinear crystals, periodically poled frequency converters, as well as electro-optical and acousto-optical components and fiber lasers. Based on its expert knowledge in the field of nonlinear frequency converters, GWU finally started to develop and manufacture laser beam sources. Besides OPOs for q-switched Nd:YAG lasers, GWU offers versatile frequency conversion modules for mode-locked ultrafast lasers. Due to its expertise in non-linear optics, GWU is able to provide customized solutions for generating, manipulating and characterizing laser radiation at almost any wavelength.