New UV and visible laser oscillations in chlorine, oxygen, nitrogen, and titanium

Eight new UV laser lines and twelve new visible laser lines of chlorine, oxygen, nitrogen, and titanium have been obtained by attaching or removing one or more inductance coils in the discharge circuit and thus controlling the peak discharge current. It is shown that with an inductance coil, the laser lines of lower multiply ionized states always appear in a longer wavelength range; without the coil, the laser lines of higher multiply ionized states always appear in a shorter wavelength range. Since the durations of these laser lines are much longer than the discharge duration, the lasers are excited in the afterglow, i.e., they are recombination lasers in the UV and the visible.