“…Previously, we developed a longitudinally excited VUV-F 2 laser (λ = 157 nm) with a fast discharge, using a capacitor-transfer circuit at low pressure [4]. However, in the VUV-F 2 , laser oscillation at low pressure, the red-F * laser (λ = 630-780 nm), which oscillates by transverse discharge excitation scheme at high pressure [3,4], did not oscillate.…”