Laser Pre-mix Gas Specification
Laser gas quality is critical to the performance and reliability of the laser. Based on our experi- ence, we recommend AGA’s LaserMix 21 or BOC’s LASERSHIELD F. If you choose a supplier other than AGA or BOC, use the following laser gas specification.
NOTE: If the gas is not mixed to the required specifications, the laser will not run correctly. The laser uses a mix of carbon dioxide (CO2), Nitrogen (N2) and Helium (He) at 28 psi. Give this specification to your gas supplier.
Laser Oscillator Gas Mixture
Gas | CO2 | N2 | He |
| 5% 0.25% | 55% 2.75% | 40% 2.0% |
| 4.75% - 5.25% | 52.25% - 57.75% | 38% - 42% |
Purity |
| 99.99% |
|
Moisture |
| 5 ppm total maximum | |
Hydrocarbon CnHm |
| 1 ppm total maximum | |
We recommend that you purchase gas that is certified to meet the specifications provided.7
7This means that any impurities from the bottle are included in the certified purity.
10 | LC3015 Theta User Installation Guide - October, 2003 |