Abstract
As a novel alternative to the conventional Xe flash lamps, a surface-spark-discharge ultraviolet (UV) flash with a poly-tetra-fluoroethylene (Teflon) resin was utilized to an initiation of a H2/F2 chemical laser. Because we employed a high-voltage and low-inductance power supply to drive a surface-spark flash, a stabilized surface discharge in a high pressure (≃1 atm) laser gas and high efficiency power input to an UV flash have been realized. We have obtained a maximum HF laser output energy of 8.5 J/pulse (14.6 J/ ∂) at an electrical efficiency of 9.7%. A surface-spark light source is experimentally found to be able to uniformly initiate a large-volume laser gas mixture.
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