Multiple frequency comb source apparatus , being configured for simultaneously creating a first laser pulse sequence representing a first frequency comb and at least one further laser pulse sequence representing at least one further frequency comb , wherein at least two of the first and at least one further pulse sequences have different repetition frequencies, comprising - a laser resonator device comprising multiple resonator mirrors including first end mirrors (EM 1 , OC 1 ) providing a first laser resonator , - a laser gain medium being arranged in the laser resonator device , and - a pump device being arranged for pumping the laser gain medium , wherein - the laser resonator device is configured for creating the first and at least one further laser pulse sequences by pumping and passively mode-locking the laser gain medium , - the resonator mirrors of the laser resonator device include further end mirrors (EM 2 , EM 3 , OC 2 , OC 3 ) providing at least one further laser resonator , wherein - the first laser resonator and the at least one further laser resonator share the laser gain medium , - resonator modes of the first laser resonator and the at least one further laser resonator are displaced relative to each other, wherein the resonator modes are located in the laser gain medium at separate beam path spots so that coupling of resonator modes is so weak that the laser pulse sequences do not influence each other, and characterized in that - at least one of the first and further end mirrors (EM 1 , EM 2 , EM 3 , OC 1 , OC 2 , OC 3 ) is adjustable so that the repetition frequency of at least one of the first and at least one further laser pulse sequences can be set independently from the repetition frequency of the other one of the first and at least one further laser pulse sequences. - a laser resonator device comprising multiple resonator mirrors including first end mirrors (EM 1 , OC 1 ) providing a first laser resonator , - a laser gain medium being arranged in the laser resonator device , and - a pump device being arranged for pumping the laser gain medium , wherein - the laser resonator device is configured for creating the first and at least one further laser pulse sequences by pumping and passively mode-locking the laser gain medium , - the resonator mirrors of the laser resonator device include further end mirrors (EM 2 , EM 3 , OC 2 , OC 3 ) providing at least one further laser resonator , wherein - the first laser resonator and the at least one further laser resonator share the laser gain medium , - resonator modes of the first laser resonator and the at least one further laser resonator are displaced relative to each other, wherein the resonator modes are located in the laser gain medium at separate beam path spots so that coupling of resonator modes is so weak that the laser pulse sequences do not influence each other, and characterized in that - at least one of the first and further end mirrors (EM 1 , EM 2 , EM 3 , OC 1 , OC 2 , OC 3 ) is adjustable so that the repetition frequency of at least one of the first and at least one further laser pulse sequences can be set independently from the repetition frequency of the other one of the first and at least one further laser pulse sequences. <EOS>