We have designed and constructed a surface spark discharge UV light source, using a Teflon resin substrate, as a new UV light source for H2/F2laser initiation. The measurements of the time‐integrated spectral characteristics, the radiative UV energy in the region 2700–3900 A, and the lifetime of the surface spark flash in the actual H2/F2laser mixtures are presented. The experimental results have indicated that the surface spark flash using Teflon has a promising performance for practical use in H2/F2laser initiation.