Simultaneous oscillation of resonance-metastable transition laser in calciu
m atoms and ions was obtained in a discharge tube with 1.3cm inner diameter
and 46cm electrode separation through longitudinal high frequency pulse di
scharge. The maximum laser output power and laser efficiency reach 1.1W and
0.1 percent respectively. Laser output characteristics depend on various w
orking parameters and the ratio of P-i/P-a were measured and analyzed.