| 简介 |
Provided is a laser oscillation device that can stabilize resonation even when the finesse of an optical resonator is made to be high, and which can generate laser rays stronger than conventional devices by accumulating laser rays within the optical resonator. The laser oscillation device is provided with : an excitation laser light-source that generates laser rays for excitation; a rare-earth fiber that generates laser rays having the desired wavelength, when a laser ray generated by the excitation laser light-source is supplied thereto; an optical resonator that is composed of two concave mirrors arranged facing each other, or composed of a group of mirrors including multiple plane mirrors, and that accumulates laser rays generated by the rare-earth fiber; an optical isolator that is inserted between the optical resonator and the rare-earth fiber, guides laser rays coming out from the rare-earth fiber to one end of the optical resonator, and shuts off laser rays going in the opposite direction; and a circling optical path that takes in laser rays eradiated out from the other end of the optical resonator, returns the laser rays to the optical resonator via the rare-earth fiber and the optical isolator, and promotes the resonation. |
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