| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a ultra-short pulse laser beam machine with which the interference angles and intensity of laser beams for changing and interfering with machining forms can be easily set. SOLUTION: This machine has a laser oscillator 1 which oscillates ultra-short pulse lasers, a phase grating 2 which branches the laser beams oscillated by the laser oscillator 1 to a plurality of the laser beams, a liquid crystal panel 4 which selects a plurality of the prescribed laser beams from a plurality of the laser beams branched by the phase grating 2 and modulates their phases and amplitude and a condenser lens 6 which causes the interference of a plurality of the laser beams controlled in the phase and amplitude.</p> |
