Generation of tail-free short pulses using high-pressure CO2 laser

The spectral linewidth of a transversely excited pulsed CO2 laser is broadened at high working pressures. This phenomenon causes decrease in the upper-level lifetime such that pulse width significantly compressed. Although tail part pulses owns non-negligible proportion total energy, it has minor effects during interaction process between photons and materials due to its low amplitude. Thus, great significance yield generate narrow most applications. In this study, continuously tunable with nitrogen mixture developed tail-free short pulses; minimum 30.60 ns maximum energy 481 mJ synchronously achieved pressure 7 atm, estimated peak power above 15 MW. A numerical simulation also conducted for comparison experimental results. contribution gain toward compression discussed last section paper.