Having demonstrated a fully functional afterglow helium-xenon laser, attention was turned to the use of helium-neon. These helium-neon experiments were unsuccessful, however they did demonstrate that using neon instead of helium had the potential to improve the xenon laser.
Love, A., 2018. Experiments with New Gas Mixtures. In Hollow Core Optical Fibre Based Gas Discharge Laser Systems (pp. 91-104). Springer, Cham.
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