of the trunk fiber optic 45 may also be present the parabolic mirror 41 corrects for both of these slight errors by collecting the electromagnetic energy from the output end 55 of the front fiber optic 45 and subsequently focusing the electromagnetic energy into the input end 55 of the fiber tip 51 the parabolic mirror 41 may also comprise molypdium in a preferred embodiment the clamp assembly 91 operates to firmly grip and hold the trunk fiber optic 45 in the presently preferred embodiment the clamp assembly 91 is provided with at least one slit which extends from the distal end 93 of the clamp assembly 91 to a region 95 just distal of the set screw 97 as presently embodied the at least one slit extending from the distal end 93 to the region 95 just distal of the set screw 97 comprises two slits which are adapted to allow the clamp assembly 91 to be compressed by the chuck 23 onto the trunk fiber optic 45 the chuck 23 thus the at least one slit extending from the distal end 93 to the region 95 just distal of the set screw 97 comprises two slits which are adapted to allow the clamp assembly 91 to be compressed by the chuck 23 onto the trunk fiber optic 45 the chuck 23.