| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a laser oscillator capable of obtaining a laser beam having a flat energy distribution of output laser light, without energy dispersion to a peripheral portion. <P>SOLUTION: The laser oscillator includes a laser resonator 10 having: an YVO4 crystal 40 for converting light of wavelength 808 nm from a semiconductor laser into light of wavelength 1064 nm; and a total reflection mirror 30 and a partial transmission mirror 60 disposed oppositely to sandwich the YVO4 crystal 40. The total reflection mirror 30 includes a reflection plane which transmits the light of wavelength 808 nm and totally reflects the light of wavelength 1064 nm. The partial transmission mirror 60 includes a reflection plane which transmits only a portion of the light of wavelength 1064 nm and reflects the rest. The total reflection mirror 30 and the partial transmission mirror 60 are planar mirrors. The laser oscillator outputs laser light having flat energy distribution at the tip portion. <P>COPYRIGHT: (C)2013,JPO&INPIT |
