| 摘要 |
A solid-state laser has an amplifying laser medium for producing a laser beam and a pump device that has at least one laser diode and that produces a pump radiation that impinges on a first side face of the laser medium, which side face is parallel to a z axis and parallel to a y axis that is at right angles to the z axis. On a second side face, which is opposite the first side face, the laser medium is cooled by a heat sink. The length of a y−1/e2 region of the pump radiation is shorter than the length of the first side face of the laser medium in the direction of the y axis, wherein the y−1/e2 region of the pump radiation denotes a section of the y axis over which the intensity of the pump radiation on the first side face of the laser medium has a value that is more than the maximum intensity of the pump radiation on the first side face of the laser medium divided by e2. The length of a y cooling region, which length denotes a section of the y axis, over which a cooling strip extends is less than 70% and greater than 50% of the length of a y pump region of the laser medium, wherein the y pump region denotes a section of the y axis over which 80% of the total power of the pump radiation that is absorbed by the laser medium is absorbed and at the two ends of which the intensity of the pump radiation is of equal magnitude. |
| 主权项 |
1. A solid-state laser comprising an amplifying laser medium for producing a laser beam and a pump device which has at least one laser diode and by which pump radiation is produced, said pump radiation impinges on a first side face of the laser medium, said first side face is parallel to a z axis and parallel to a y axis which is at a right angle to the z axis,
wherein, viewed in a direction of an x axis which is at a right angle to the z axis and at a right angle to the y axis, the laser beam runs through the laser medium parallel to the z axis, a heat sink to cool the laser medium is located on a second side face of the laser medium which is parallel to the z axis and parallel to the y axis and opposite the first side face, said laser medium being thermally connected to said heat sink, wherein a length of a y cooling region is shorter than a length of the second side face of the laser medium in a direction of the y axis, wherein the y cooling region of the laser medium denotes a section of the y axis over which a cooling strip extends, said cooling strip thermally connects the laser medium to the heat sink at the second side face, wherein a length of a y−1/e2 region of the pump radiation is shorter than a length of the first side face of the laser medium in the direction of the y axis, and the first side face of the laser medium extends beyond the y−1/e2 region of the pump radiation in both directions of the y axis, wherein the y−1/e2 region of the pump radiation denotes a section of the y axis over which an intensity of the pump radiation at the first side face of the laser medium has a value which is more than a maximum intensity of the pump radiation at the first side face of the laser medium divided by e2, and the length of the y cooling region of the laser medium is shorter than 70% and larger than 50% of a length of a y pump region of the laser medium, and the y pump region exceeds the y cooling region in both directions of the y axis, wherein the y pump region denotes a section of the y axis over which 80% of a total power of the pump radiation absorbed by the laser medium is absorbed, and at the two ends of which an intensity of the pump radiation is of equal magnitude. |
