High-pressure electric-discharge CO₂laser

Investigation of the multi-spectral line output characteristics of a multi-atmospheric CO2 pulsed laser

“…6(a) and 6(b) reveals that the highest energy spectral line moves from 10P(18) to 10P(16). This trend is consistent with the result of Ishchenko 16 . The energy proportion of theoretical simulation is in good agreement with that of the experimental measurements.…”

“…8, it can be seen that, for the two spectral lines 10P(16) and 9P( 16), Ding and Wan's simulation results are still quite consistent. But for the two spectral lines 9R( 16) and 10R ( 16), the simulated gain of 10R ( 16) is obviously higher than that of 9R (16), which contradicts our experimental results. This is because Ding and Wan's model only considers the gain of the sequence band and the hot band as a multiple of that of the regular band, without carefully considering the gain contribution at each frequency of the sequence band.…”

“…This trend is consistent with the result of Ishchenko. 16 The energy proportion of theoretical simulation is in good agreement with that of the experimental measurements.…”

“…To investigate the variation regulation of the gains of four bands as the pressure increases, four strong lines of 9R ( 16), 9P ( 16), 10R (16), and 10P ( 16) were chosen to represent the four corresponding bands. Figure 8 displays the measured and simulated small-signal gains of four strong lines at 3 to 14 atm when the optical cavity structure, injection density, and gas composition remain unchanged.…”

“…In the absence of any frequency selective element within the resonant cavity, the laser energy was primarily concentrated on the 9R(20) line at 12 atm. Harris et al 5 adopted an electron-beam pumped CO 2 laser to output the 10R (14), 10R (16), and 10R(18) lines at 15 atm, of which the 10R (16) line exhibited the highest gain. Wan et al 6 proposed a scheme for the selfsustained discharge multi-atmospheric CO 2 laser with electron-beam preionization.…”