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首页> 外文会议>Conference on Laser Florence 2001: A Window on the Laser Medicine World, Nov 7-11, 2001, Florence, Italy >Er:YAG Laser giant pulse generation
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Er:YAG Laser giant pulse generation

机译：Er：YAG激光巨脉冲产生

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Three possibilities of mid-infrared Er:YAG lasers Q-switching were investigated: mechanical and two electro-optical ones. The mechanical method of Q-switching was proved by using of a rotating mirror placed inside the resonator; Pockels or Kerr cells were used for the electro-optical Q-switching. The Pockels cell was constructed on the basis of the Brewster angle cut LiNbO_3 crystal; the Kerr cell used a ceramic PLZT material. In all the three cases the Er:YAG laser resonator was plan-parallel and it consisted of the rear copper mirror and output coupler with 50 - 70% reflectivity. The Er: YAG crystal was pumped by one xenon flashlamp in a single elliptical silver coated cavity. The generated giant pulse output parameters were the following: the length was measured in the range of 200 - 400 ns; the output energy was from 10 mJ up to 30 mJ. With the rotating mirror the output was stable in a wide range of the switching interval. All the three cases can be used in applications. The particular Q-switch can be chosen from the point of view of output parameters and construction requirements.
机译：研究了中红外Er：YAG激光器调Q的三种可能性：机械的和两个电光的。通过使用放置在谐振器内部的旋转镜证明了Q切换的机械方法。 Pockels或Kerr单元用于光电Q转换。基于布鲁斯特角切割的LiNbO_3晶体构建了Pockels晶胞； Kerr电池使用陶瓷PLZT材料。在这三种情况下，Er：YAG激光谐振器都是平面平行的，由后铜镜和输出耦合器组成，反射率达50-70％。用一个氙气闪光灯将Er：YAG晶体泵入单个椭圆形镀银腔中。产生的巨脉冲输出参数如下：测量的长度在200-400 ns的范围内；输出能量从10 mJ到30 mJ。使用旋转镜，输出可在很大的开关间隔范围内保持稳定。这三种情况都可以在应用程序中使用。可以从输出参数和构造要求的角度选择特定的Q开关。

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