Effect of Hydrogen Concentration on Low Divergence Emission in Copper Bromide Lasers for Micro-Machining Applications

摘要

We present a systematic study of the effect of hydrogen additive on the beam quality of Copper Bromide lasers. It is a well established fact that the addition of small amounts of hydrogen to the neon buffer gas of this class of laser will dramatically increase their average output power and efficiency. Our results show that the partial pressure of hydrogen used to maximise the total output power is not the same as that which optimises the power density in the drilling plane of a copper bromide laser based micro-machining system.