The TEA CO2-Lasers with High Output Emission Intensity

TEA CO 2 -lasers generating short pulse radiation and operating in a pulse-periodic mode with the repetition rate up to 10 Hz have been developed. It is shown that the addition of nitrogen up to 8% in the mixture of molecular gases СО 2 :H 2 = 500:50 at a total pressure of P = 0.6 bar enhances the peak emission power maintaining the temporary pulse shape. An output beam intensity of 12.3 MW/cm 2 was obtained for the 30 ns pulse at a laser efficiency of 2.8%. In a compact TEA СО 2 -laser with an active medium volume of 6 cm 3 , a beam with an output intensity of 24 MW/cm 2 at pulse duration of 70 ns was obtained.