Abstract
The possibility of obtaining high-power 16-μm radiation from a conventional gasdynamic CO2 laser (GDL) has been evaluated theoretically by means of a modified Anderson’s time-dependent method. The analysis showed that up to 2.5% cm−1 gain can be achieved on the P(15) line of the (0200)–(0110) transition by injecting a fast 9.4-μm pulse at a position 15 cm downstream of the nozzle throat to populate the upper laser level. For a gas mixture of CO2:N2:H2=20:73:7(%) and a nozzle area ratio of 100, the optimum reservoir temperature and pressure were calculated to be 1200 K and 15 atm. Because of its high repetition rate and high average-power capabilities, such a conventional GDL could easily provide the power levels required for industrial applications of 16-μm radiation.
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