Laser-Induced Electric Breakdown of Krypton in the UV-Near IR Spectral Region

摘要

We have experimentally studied combination breakdown (electric and optical breakdown or electro-optical breakdown) of krypton under low vacuum (p similar to 10(1) to 10(5) Pa) during simultaneous exposure to nanosecond laser pulses (lambda similar to 213, 266, 355, 532, 1064 nm, tau (0.5) similar to 18 ns, I (0) similar to 10(9) to 10(11) J/cm(2)) and a constant electric field (E similar to 0-13.2 kV/cm). We have demonstrated a substantial change in the ratio of the optical and electric components of the breakdown threshold I (0) (E) for different gas pressures and photon energies, as well as the presence of a synergistic effect, manifested in the many-fold decrease in the threshold values for the components of the combination treatment. The results obtained can be used to assess the breakdown processes in gas-discharge devices.