Abstract

Laser transition on the 00°2 – [10°1, 02°1]_LU sequence-bands of CO₂ was first reported by Reid and Siemsen.^1,2 A number of studies have been carried out in various systems such TEA and waveguide lasers. Because the frequencies of sequence lines lie between regular lines, they can be obtained only by using cavities of good wavelength discrimination or with an intracavity hot CO₂ cell.^1-5 In the previous study,^6,7 we demonstrated the waveguide lasers capable of oscillation on sequence fines over wide spectral range with medium level of output power. It shows that the insertion of a simple hot CO₂ waveguide is suitable for a dc discharged waveguide laser to operate in sequence- band transitions. In considering the advantages exhibited by RF-excited waveguide laser systems,⁸ it will be preferable to have the sequence-band waveguide lasers operated with RF discharge. In this paper, we report the preliminary result of a system with RF excitation, which yields several sequence lines oscillation.

© 1996 Optical Society of America