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Laser gases
From GAWDAwiki
Laser gases are needed to generate a gas laser beam. The exact composition of a laser gas varies depending on the type of laser and the manufacturer. Some laser types also require small additions of other gases such as oxygen, hydrogen or xenon. Impurities in the laser gas impede the laser performance by lowering the output power, disturbing the uniformity of the electrical discharge and requiring frequent service and maintenance for the laser optics. The most harmful impurities have been identified as water vapor and hydrocarbons. Impurities in the laser gas, however, come not only from the gas cylinders themselves, but can also be introduced via a poorly designed and set-up gas distribution system.[1]
