A laser source apparatus is configured to provide a beam path to generate a first laser beam and a second laser beam. The laser source apparatus includes a laser generator, at least one spectrum broadening unit and a pulse splitter in the beam path. The laser generator is configured to generate an original laser beam with a pulse duration smaller than 1 ps. The spectrum broadening unit is configured in a following stage of the laser generator. The spectrum broadening unit includes a multiple plate continuum. The multiple plate continuum includes a plurality of thin plates. The thin plates are configured along the beam path in order. The pulse splitter is configured in the following stage of the laser generator. The pulse splitter is configured to divide the original laser beam into the first laser beam and the second laser beam. Therefore, the first laser beam and the second laser beam can be featured with short pulses, high repetition rates, high brightness and supercontinuums. |