عنوان مقاله [English]
نویسنده [English]چکیده [English]
In this work, the hybrid configuration is used for single longitudinal mode operation of a 3 atm pulsed CO2 laser with 14 cm long active volume. To do this, an intracavity low pressure continuous wave CO2 laser with 120 cm long active volume is used. It has been found that the emitted pulses of the system exhibit an almost single mode behavior in above threshold condition and also for below threshold condition at pressures down to 7 mbar. In order to characterizing of the system performance, various parameters of the single-mode pulses at different pressures and powers of the continuous wave laser were analyzed. Furthermore, the threshold pressure of the continuous wave laser for single mode operation was obtained about 9.5 mbar. It has been shown that in both above and below threshold conditions, the single mode pulses have higher durations and rise times and also lower build up times.