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Pulsed inductive discharge; Gas lasers pumping; Pulsed inductively coupled plasma The RF induction excitation of continuous-wave lasing was reported in [1-3].
Continuous-wave lasing on transitions in atomic argon ions in the green spectral range under excitation by a longitudinal inductive RF discharge was obtained in [1,2].
Characteristic feature of the emission of pulsed inductive lasers is ring-shaped laser beam with low divergence and pulse-to-pulse instability is within 1%.
The application of the pulsed inductive discharge for excitation is a promising method for pumping not only gas lasers, but also metal vapor and solid state lasers.
In addition, this method can be used to produce the plasma for obtaining radiation (including induced radiation) in any spectral range, especially that extending from 100 nm to THz, which is of considerable interest for microelectronics, photolithography and biomedicine.
The output laser energy was measured with a PE50-BB Ophir pyroelectric pulse energy meter (Ophir Optronics Ltd).
The temporal parameters of electric pulses were recorded with high-voltage P6015A probes and a 200-MHz TDS-2024 Tektronix oscilloscope. The temporal parameters of optical pulses were recorded with a Ph EC-22 and Ph C-15 coaxial photocells with a temporal resolution of 10-10 s and infrared photodetector. The excitation system operated in the following way.The ignition moment of the inductive discharge was determined by the appearance of spontaneous emission of gases in the discharge tube.