| 摘要 |
A lasing medium having a tailored dopant concentration and a method of fabrication thereof is disclosed. The lasing medium has a single crystal having a continuous body having a selected length, wherein the crystal comprises dopant distributed along the length of the body to define a dopant concentration profile. In one embodiment, the dopant concentration profile results in a uniform heating profile. A method of fabricating a laser crystal having a tailored dopant concentration profile includes arranging a plurality of polycrystalline segments (12) together to form an ingot (10), the polycrystalline segments each having dopant distributed, providing a crystal seed (14) at a first end of the ingot, and moving a heating element (20) along the ingot starting from the first end (16) to a second end (18) of the ingot, the moving heating element creating a moving molten region (22) within the ingot while passing therealong. |
