| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser device from which laser light of sufficient output can be obtained stably.SOLUTION: A laser device 1A has: a semiconductor laser 21 emitting exciting light L1; an optical fiber 3 into which the exciting light L1 emitted from the semiconductor laser 21 enters, and from which the exciting light L1 is emitted while being guided; and an optical resonator 5 having a laser medium 51 into which the exciting light L1 emitted from the optical fiber 3 enters, and emitting the laser light L2. The optical fiber 3 has a GI fiber 31 forming a part on the light incident side, and an SI fiber 32 bonded to the GI fiber 31 and forming a part on the light emitting side. |
