Laser cavity material

摘要: Polytetrafluoroethylene (PTFE), or like polymeric material is provided for use as a laser cavity to efficiently couple flash lamp emissions into the medium due its exceptionally high diffuse reflectance characteristic of better than 99%, which increases output by much 100%. In one embodiment, unique technique fabricating includes both sintering and providing an optimal packing density prior sintering, with take place at atmospheric pressure preserve closely possible in sintered product. This provides void percentage reflectivity. For PTFE, densities approaching 1.0 g/cm 3 yield opaque optimally reflective material. Moreover, embodiment unsintered particle size maintained less 50 microns obtain machinability required cavities, granular starting having impurity content 10 particles per square inch so that disintegration degradation pitting prevented. all presintering processing done clean room avoid contamination