Abstract
Recent experiments have led to improvements in the hybrid Electric Oxygen-Iodine Laser (ElectricOIL) system that significantly increased the discharge performance, supersonic cavity gain, and laser power output. The continuous wave laser operating on the I( 2 P 1/2 ) → I( 2 P 3/2 ) transition of atomic iodine at 1315 nm was pumped by the production of O 2 (a 1 Δ) in a radio-frequency discharge in an O 2 /He/NO gas mixture. Molecular iodine was injected into the active oxygen flow from the electric discharge and expanded through a supersonic cavity to lower the gas mixture temperature and shift the atomic iodine equilibrium in favor of the I( 2 P 1/2 ) state. Greater than 30% of the discharge power is now being coupled into the active oxygen gas flow, a gain of 0.067% cm -1 , and a laser power of 4.5 Watts were measured. Modeling with the BLAZE-IV model is in good agreement with data.
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