| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a laser device having high optical amplification efficiency. <P>SOLUTION: The laser device 100 includes: a laser light source 10 which outputs laser light; a pumping light source 30 which outputs pumping light; an optical fiber 20 which includes a core 21 and a clad 22 and inputs the laser light and pumping light and through which the laser light is propagated by the core 21 and the pumping light is propagated by the core 21 and clad 22; and a glass rod 50 which is doped with rare earth elements, has an input end surface 51 and an output end surface 52 and has a diameter larger than that of the core 21, wherein the laser light and pumping light outputted from the optical fiber 20 are inputted from an input end surface 51, and at least the laser light is outputted from the output end surface 52. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
