| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser beam distribution device of which the laser beam characteristics and the optical axis of the laser beam do not change, and is easy to handle, and is also capable of distributing the laser beam to many measurement instruments for simultaneously measuring the characteristics of the laser beam by them. SOLUTION: A plane mirror 2, arranged in a case 1 having an incident port, an exit port, and a distributing port, is controlled to turn based on the pulse timing detection signal of the laser beam. The plane mirror 2 has a reflecting surface area and a passing hole area and is arranged at a position intersecting the optical axis of the laser beam and is freely go in and out of the optical axis of the laser beam, and is arranged so that when the reflecting surface area is irradiated with the laser beam, the laser beam reaches a distribution port 15, and when the passing hole area is irradiated therewith, the laser beam travels straight and reaches an exit port 13, and the reflecting surface area is put in and out of the laser beam axis, according to the laser pulse timing signal and distributes the laser pulse to the exit port 13 and the distribution port 15.
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