A discharge cell has been used to simulate conditions in fast flow, radio-frequency excited CO2 lasers using dielectric electrodes. The frequency dependence of the discharge structure and the Alpha to Gamma transition has been observed in the range 13 - 40MHz. The radio frequency, the thickness of the dielectric layer, and the parallel capacitance of the matching circuit are all shown to control the discharge uniformity and excitation conditions at the centre of the discharge.
|Number of pages||4|
|Journal||Proceedings of SPIE - the International Society for Optical Engineering|
|Issue number||pt 2|
|Publication status||Published - 1991|
|Event||8th International Symposium on Gas Flow and Chemical Lasers Part 1 (of 2) - Madrid, Spain|
Duration: 10 Sept 1990 → 14 Sept 1990