Patent ID: 8071910

Claim:
A laser processing apparatus for processing a sample by irradiating a laser beam thereto, comprising: a first laser oscillator and a second laser oscillator respectively irradiating a first laser beam and a second laser beam, wavelengths of the first and second laser beams being different from each other; a switch that is configured to switch the first laser oscillator to the second laser oscillator or the second laser oscillator to the first laser oscillator so that either one of the first laser beam or the second laser beam is irradiated; a slit provided in an optical path for leading to the sample whichever one of the first laser beam or the second laser beam is being irradiated after the switching by the switch; an optical path forming member forming the optical path and disposed such that whichever one of the first laser beam or the second laser beam is being irradiated after the switching by the switch passes through the slit; and an objective lens switch that is configured to switch between a plurality of objective lenses, the objective lens switch being disposed between the slit and the sample and switching one of the plurality of objective lenses that is in the optical path to another of the plurality of objective lens having a predetermined magnification corresponding to the laser wavelength of whichever one of the first laser beam or the second laser beam passes through the slit.