| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To stably perform homogeneous machining without depending upon the polarization direction. <P>SOLUTION: By this laser beam machining, the fundamental wave laser beam 3 is passed through two non-linear optical crystals 1A, 1B for changing wavelength which are arranged in series and the changed wavelength laser beam 3C the wavelength of which is changed so that the polarization directions are different directions each other in the range of 45-90°irradiates a material 17 to be machined. This laser beam machining device is provided with the wavelength changing device for changing the wavelength which is provided with a laser beam source 2 for generating the fundamental wave laser beam and two non-linear optical crystals for changing the wavelength which are arranged in series and with which the wavelength is changed so that the polarization directions are different each other in the range of 45-90°with two respective non-linear optical crystals by passing the fundamental wave laser beam through that two nonlinear optical crystals and an irradiating device for irradiating the material to be machined with the changed wavelength laser beam, the wavelength of which is changed with the wavelength changing device. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
