Study of a large-bore copper vapor laser

A large-bore copper vapor laser with a 6.5 cm bore and 220cm long discharge tube has been developed. A maximum output power of 106W was achieved. The laser operated at a repetition rate of 5 kHz at the 510.6nm and 578.2 nm lines of atomic copper. The efficiency reached 1% when the laser operated at the average output power of 95-100W. Some relations between output power and discharge parameters were presented in this paper. An explanation of the physical characteristics of the large-bore CVL through a comparison of the large-bore CVL with the small-bore (D<6cm) CVL was given.