研制了一台高重复频率电光调Q单纵模主振荡激光器。利用高速电子电路负反馈控制系统,在激光器谐振腔内引入一个随光强动态变化的损耗,建立了准连续的预激光状态,在此基础上进行电光调Q,加上谐振反射器的纵模选择作用,最终实现了稳定的单纵模输出。激光重复频率为1kHz,脉冲宽度为15ns,最高脉冲能量为2mJ,在30min时间内,单纵模几率达100%。激光器结构紧凑,系统简单可靠,已成功应用于激光振荡-放大系统的振荡器中。 A high repetition frequency electro-optic Q-switched single longitudinal mode primary oscillation laser was developed. Using the negative feedback control system of high-speed electronic circuit, a dynamic loss along with the light intensity is introduced into the laser cavity, and a quasi-continuous pre-laser state is established. Based on this, electro-optical Q-switching, plus the longitudinal mode of the resonant reflector Choose the role, and ultimately achieve a stable single longitudinal mode output. The laser repetition frequency is 1kHz, the pulse width is 15ns, the maximum pulse energy is 2mJ, and the probability of single longitudinal mode is 100% within 30min. The compact structure of the laser, the system is simple and reliable, has been successfully applied to the laser oscillation - amplification system oscillator.