A PULSED AR+ ION LASER AT HIGH CURRENTS AND LOW PRESSURES (IMPULSNYI LAZER NA IONAKH AR+ PRI BOLSHIKH TOKAKH I NIZKIKH DAVLENIYAKH),
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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Oscillation of a pulsed Ar laser at heavy currents and low pressures was investigated experimentally. The heavy current pulsed discharge was achieved in quartz tubes 1000 mm long and 10 mm in internal diameter. The tubular electrodes, made of tantalum, were 50 mm long and 10 mm in diameter. The output of the gas-discharge chamber was directed through quartz plane-parallel plates situated 150 mm from the electrodes at Brewster angles. The cavity consisted of two spherical mirrors with a 300-mm radius of curvature, placed 1500 mm from each other. One mirror was silver coated and the other dielectric coated reflectivities were 90 and 30, respectively. The energy was supplied from condensers with capacities of 0.01, 0.1, 0.4, and 2.6 micro F at 10-25 kv. The equipment was capable of generating 1-15 kamp pulses for 1-5-microsec discharge periods.
- Lasers and Masers