A parametric study of the copper chloride laser

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Abstract
A parametric study of the double‐pulsed copper chloride laser is reported here. The effects of a wide range of variables on the laser energy density and on three characteristic time intervals (the minimum, maximum, and optimum delay time) between the two electrical discharge pulses were studied. The geometric variables investigated included the tube diameter from 2.3 to 40 mm and the tube length from 3 to 60 cm. Three buffer gases, helium, neon, and argon, were studied over the pressure range 0.5–50 Torr and the tube temperature was varied from 270 to 500 °C. The energy density and voltage of both the dissociation and pumping pulse were varied independently from less than 1 mJ/cm3 at 8.5 kV to over 500 mJ/cm3 at 20 kV. The optimum conditions for maximum laser energy density were found to be with 20 Torr neon in a 10‐mm by 30‐cm tube at 400 °C. The maximum energy density obtained was 22 μJ/cm3.

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