Output parameters and a spectral study of UV Cu + Ne–CuBr laser

A comparative study on the temporal behaviour of the average output power of UV Cu + laser with quartz and ceramic inserts is reported. Spectral investigations of the discharge are also made. The use of quartz inserts leads to some impurities introduction into the gas mixture and to an average output power reduction from 500 to 30 mW at multiline output (248.6, 252.9, 260.0 and 270.3 nm ) for UV lasing of 25 h . The utilization of ceramic inserts allows to maintain relatively constant gas mixture composition and average output power of about 300 mW for 100-h.