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Repetition frequency laser used in precision strike system can transmit a series of laser pulse trains. The repetition frequency pulse transmitted by common repetition frequency laser device does not meet the high precision measurement and target indication requirements due to the existing of “relaxation oscillation” effect. Thus, a Laser Q modulation technology must be used for the laser pulse shaping. Q switch is formed by applying high voltage to the electro-optical crystal cut at a certain angle through electro-optical Q modulation technology. At present, the Q switch of the high repetition frequency laser system is easy to be damaged under the state of high repetition frequency. “Piezoelectric bell response” exists with the over-high voltage and that will affect the repetition frequency accuracy. Aiming at LGS crystal applied in the repetition frequency laser equipment, we carry out an experimental research in order to solve the technical problems, such as optical rotation effect, frequency stabilization driver, and develop LGS Q switch, driver module and repetition frequency laser system. The experiment results show that the Q switch applied in the high repetition frequency laser system is capable to produce the anti-damage and high repetition frequency effect.
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