CYCLOTRON RESONANCE PUMPING OF GAS LASERS.
Quarterly rept. no. 2, 1 Sep-30 Nov 65,
ASTRO-ELECTRONICS DIV RADIO CORP OF AMERICA PRINCETON N J
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Experiments employing combined microwave electron -cyclotron resonance with d-c pumping as well as experiments with d-c pumping only were performed on argon lasers. Effort was directed towards clearly defining the effects of these pumping combinations on discharge behavior and laser operation. Results of these experiments show that in low-wall-loss magnetically confined d-c discharges, the gas pressure is greatly reduced by ion-drift pumping towards the cathode, and laser action takes place at considerably lower pressures than had hither-to been supposed. Microwave cyclotron -resonance pumping was seen to have a significant effect in increasing laser output. This increase in output occurred at high initial gas pressures, and is dependent on the magnetic field being at the resonance value. The laser tested was 40 centimeters long and 8 millimeters in diameter. It was fitted into a tunable microwave cavity within a magnetic solenoid. Measurements were made with both pulse and continuous operation. Author
- Lasers and Masers
- Plasma Physics and Magnetohydrodynamics