| 摘要 |
PURPOSE:To stabilize the laser power, emitting beam angle, emitting position and laser beam mode of a laser oscillator by forming an optical substrate for holding a resonator mirror of a honeycomblike plate and reinforcing plates made of an FRP material bonded to the front and back surfaces of the plate in a sandwich structure, and reducing the angular change of the mirror. CONSTITUTION:Optical substrates 10, 10 coupled by a connecting rod 4 for holding a resonator mirror 1b is composed of a honeycomblike plate 11 made or aluminum or aluminum alloy, and reinforcing plates 12, 12 formed in thin platelike shape of an FRP material for holding the plate 11 to be bonded to the front and back surfaces of the plate 11 in a sandwich state. The substrates 10 are so arranged as to be the state that sleeves 13 are inserted into holes opened at the connecting portions of the rods 4, 4 to exposed at the front and back surface sides, the rods 4, 4 are penetrated to be clamped. The sleeve 13 obtains the dimensional accuracy and mechanical accuracy of the rod connecting portion by clamping to simply and suitably obtain the connecting state of the substrates 10 with the rods 4. |
