Pulsed strontium vapor laser

An investigation was made of the power characteristics of the laser transitions in strontium atoms and ions under self-heating conditions. The total (over the whole spectrum) average output power was 1.2 W and the efficiency was 0.1% when the repetition frequency of the excitation pulses was 20 kHz in a tube 10 mm in diameter and 380 mm long. About 75% of the output power was concentrated in a line at 6.45 μ.