Patent attributes
To provide a laser processing apparatus compatible with increase in the output of the pumping light source without increasing the reflectance of the output mirror. A solid laser medium for generating laser oscillation when pumping light from an pumping light source enters through two end surfaces, a splitting part for splitting pumping light outputted from the pumping light source into two paths so that the respective pumping components of pumping light enter through the respective end surfaces of the solid laser medium along the respective split paths, dichroic mirrors which are arranged along the split paths in such a manner as to face the respective end surfaces, allow pumping light to transmit and reflect laser oscillation light toward the end surface sides, and condenser lenses which are arranged along the split paths in such a manner as to face the dichroic mirrors and condense pumping light that transmits through the dichroic mirrors so that the diameter of the spot where the end surfaces of the solid laser medium are irradiated is smaller than in the TEM00 mode of the solid laser medium are provided, and the configuration allows pumping light to enter through the respective end surfaces of the solid laser medium, so that the solid laser medium can be excited.
