Tunable multiline and single-line operations on a pulsed transversely excited atmospheric pressure CO2 laser by means of an intracavity CO2 gas absorber

Abstract

Transient frequency shift induced by the electron density in injection locking of transversely excited atmospheric CO2 lasers Appl. Phys. Lett. 45, 197 (1984); 10.1063/1.95208Extended gas lifetime operation of a miniature transversely excited atmosphere CO2 laser doped with tripropylamine Appl. Phys. Lett. 41, 601 (1982);The operating rotational-vibrational transition lines are observed in a pulsed transversely excited atmospheric pressure C0 2 1aser with a separated intracavity CO 2 gas absorber. The laser operates a dominant 1O.6-,um P-20 and P-18 line in a low pressure of CO 2 cell and a single-line operation of P-20 line at more high pressure. In a high pressure, the laser does not operate the 1O.6-,um P-20 and P-18, but it operates the single-line operation of 1O.6-,um R-14, R-18, P-22, and 9.4-,um R-12, and in multiline oscillation, of various combinations of these lines and 1O.6-,um R-16, according to the temperature of this gas absorber. The results are attributed to the absorbing mechanism of the CO 2 gas.2717