| 摘要 |
PURPOSE:To obtain easily a rod for laser having clad layers without receiving a large loss by forming crystal layers or glass layers, the refraction index of which is smaller than that of a crystalline like a round bar, around its crystalline like a round bar including light emitting elements. CONSTITUTION:Crystal or glass layers 2, refraction indices of which are smaller than that of a crystalline 1 like a round bar, are formed around its crystalline 1 like a round bar including light emitting elements. In this way, a rod for laser having clad layers is easily made and then, the rod is easily obtained without receiving a large loss. The formation of thick clad layers makes a core diameter small and makes it possible to obtain the rod for laser which has a small emission part and directly connects to a single mode. |
