الفهرس 
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Abstract
The passive Q-switching technique was chosen while designing the system for more compact, robust and lessens the complexity of the system. The present Nd:YAG laser system operates at 1064-nm single shot pulsed. The average output energy of the present passive Q-switched laser pulse is 170mJ with slope efficiency of 0.34%. The passive Q-switch provides a train of 6- pulses maximum for each shot. The number of pulses depends on the pump energy. The energy fluctuation is within 5%. The maximum number of six laser pulses is obtained at the maximum pump energy of 50J. The pulse width of each pulse ranges from 20 to30 ns. All laser pulses in each shot have different intensities. The variation of the laser pulse energy in each shot is within 36% relative standard deviation. The minimum energy per pulse within the train of pulses is 10-mJ while the maximum is 60-mJ. The average energy per pulse is 28 mJ. The maximum total energy of 6- pulses laser shot is about 167 mJ with 16% relative standard deviation.