Patent ID: 8047663

Claim:
Apparatus for terminating a beam of laser radiation, comprising: a thermally conductive body having a first side and an opposite second side; a beam trapping chamber machined into the first side of the thermally conductive body; a separate curved channel machined into the first side of the conductive body, the channel having first and second opposite ends with the first end arranged to receive the laser beam and the second end in optical communication with the separate beam trapping chamber; a fluid channel machined into the opposite second side of the conductive body, the fluid channel configured to flow a cooling fluid; a first cover plate configured to cover the beam trapping chamber and the curved channel on the first side of the conductive body; and a second cover plate configured to cover the fluid channel on the opposite second side of the conductive body and to flow a cooling fluid to and from the fluid channel; wherein the curved channel terminates at said second end and opens up into the separate beam trapping chamber.