ACTIVE FIBER COOLING DEVICE AND FIBER LASER OSCILLATOR INCLUDING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an active fiber cooling device capable of improving cooling uniformity and assembly work easiness of an active fiber, and to provide a fiber laser oscillator.SOLUTION: An active fiber 3 is spirally wound around an outer peripheral surface of a wound part 5 toward the rear surface 41 side of a substrate 4, and cooling means 7 is disposed at an outer periphery of the wound active fiber 3 so as to press and hold the active fiber 3.