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使用一种带旋转反射镜和放大器结构的激光腔,得到钕激光器可调微秒(1.5—5μs)脉冲振荡,0.5J脉冲能量.产生可调微秒光脉冲的固体激光器,在科学和技术领域有很多应用.通常采用电控损耗方法,通过负反馈或仔细编程Q开关驱动器使Q开关连续可调.这种方法是很复杂且是不可靠的.有人曾证实过.在钕玻璃激光器中,产生微秒脉冲振荡最简单的方法是使用光学—机械调制器.用已知内腔Q开关方法不但能得到微秒脉冲,还能在放大器输入时控制振荡器输出,例如,用声光调制器在
Using a laser cavity with a rotating mirror and an amplifier structure, a tunable microsecond (1.5-5 μs) pulsed oscillation of a neodymium laser with a 0.5-J pulse energy is generated. A solid-state laser producing an adjustable microsecond pulse of light is used in the fields of science and technology There are many applications. It is common practice to use an electronic loss control method to continuously adjust the Q-switch by negative feedback or careful programming of the Q-switch driver. This approach is complicated and unreliable. It has been demonstrated that in neodymium glass lasers, The easiest way to generate a microsecond pulse oscillation is to use an optical-mechanical modulator. With the known cavity Q-switching method, not only the microsecond pulse but also the oscillator output can be controlled at the amplifier input. For example, using an acousto-optic modulator