| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser irradiating device which can reduce ununiformity in intensity disrtribution because of interference fringes. SOLUTION: The laser irradiating device is provided with an optical resonator 4 in which a high reflection mirror 2 and an output mirror 3 are arranged to face each other at a prescribed interval, a solid laser rod 5 provided in the optical resonator, an excitation lamp 6 exciting the solid laser rod and an etalon 8 which is provided in the optical resonator and oscillates laser rays outputted from the output mirror in a single vertical mode by exciting of a laser medium. Further the laser irradiating device is provided with a controller 11 for controlling the etalon so that wavelength selected by the etalon continuously changes and a optically uniformizing means 14 for uniformizing the intensity distribution of the laser beams output from the output mirror.
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