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The experimental study of the laser beam parameters of the pulse repetitive RF-excited diffusion cooled waveguide CO2 laser are presented.The measurements are carried out for the pumping pulse duration of 100 μs and pulse repetitive rates 5-14 kHz.The average power density delivered to the active medium is 76 W/cm3.Three types of the pulses,namely the square,the sine and the triangular ones have been applied at the input as pumping pulses and their effects on the output power and the delay time have been studied.The output power of the radiation versus input power,pressure of the laser gas mixture and modulation frequency has been investigated.The results indicate that the output peak power for the three types of pulses increases with increase of the pressure of the laser gas mixture and with the input power where as it decreases with the repetition frequency.The delay time of the output pulse decreases with the increase of the repetition frequency and input power,where as it increases with the increase of the pressure of the laser gas mixture.The behavior of the output power and the delay time with duty cycle for square pulse has also been investigated.
The experimental study of the laser beam parameters of the pulse repetitive RF-excited diffusion cooled waveguide CO2 laser are presented. These measurements are carried out for the pumping pulse duration of 100 μs and pulse repetitive rates 5-14 kHz. The average power density delivered to the active medium is 76 W / cm3.Three types of the pulses, namely the square, the sine and the triangular ones have been applied at the input as pumping pulses and their effects on the output power and the delay time have been studied. The output power of the radiation versus input power, pressure of the laser gas mixture and modulation frequency has been investigated. The results indicate that the output peak power for the three types of pulses increases with increase of the pressure of the laser gas mixture and with the input power where as it decreases with the repetition frequency. delay time of the output pulse decreases with the increase of the repetition frequency and input power, where as it increase s with the increase of the pressure of the laser gas mixture. The behavior of the output power and the delay time with duty cycle for square pulse has also been investigated.