A tunable stabilized single-mode TEA CO2 laser

Abstract
A TEA CO2 laser which can be operated in a single mode is described. The laser can be tuned to most rotational lines in the 9.6‐μ and 10.6‐μ CO2 emission bands. The system can also be fine‐tuned to oscillate up to ±2 GHz off any particular line center. Application of the laser to obtain high‐resolution spectroscopy of a D2O absorption line is briefly described.