| 摘要 |
PROBLEM TO BE SOLVED: To obtain a laser oscillator that suppresses the deformation of a cooling flange so as to follow a flange presser and a base when fastening and fixing the cooling flange to which an optical element is brought into contact for cooling the optical element by sandwiching the cooling flange by the flange presser and the base and precisely keeps the flatness of the optical element in contact with the cooling flange. SOLUTION: The flange presser is brought into contact with the cooling flange at three projections provided at one of the flange presser and the cooling flange; the three projections are disposed at a vertex of a triangle; the cooling flange is brought into contact with the base at three projections provided at one of the cooling flange and the base; the three points, where the flange pressure is in contact with the cooling flange at the projections, and the three points, where the cooling flange is in contact with the base at the projections, are disposed at positions where they face each other; and the flange presser sandwiching the cooling flange and the base are fastened and fixed by a fastening member. COPYRIGHT: (C)2009,JPO&INPIT |
