The intention of the development of the excimer laser series ExciStar XS was to design a compact excimer laser with lowest investment costs, but also with superior performance, which can be used even in industrial applications. These requirements led to an excimer laser with extremely compact size that offers exceptional performance and lifetime characteristics at repetition rates of 200Hz and 500Hz. ExciStar XS combines a number of Coherent's innovations in excimer laser technology to deliver high reliability, low maintenance downtime and long lifetime. Main features are: