For the development of a monolithic, chip based optical frequency comb, Tobias Kippenberg, Ronald Holzwarth and Pascal Del`Haye will receive the Helmholtz Award 2009 by the Physikalisch-Technische Bundesanstalt (PTB). This new type of frequency comb could be used in the future for optical frequency measurements and also for designing clocks of extremely high precision, or in optical telecommunications.