...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Infrared physics and technology >Rapidly tuning miniature TEA CO2 laser - rotating mirror and grating mechanism
【24h】

Rapidly tuning miniature TEA CO2 laser - rotating mirror and grating mechanism

机译：快速调谐微型TEA CO2激光-旋转镜和光栅机构

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this research, directed toward using differential absorption lidar (DIAL) for measuring concentrations of pollutant gases, a device for rapidly tuning a transversely excited atmospheric-pressure (TEA) CO2 laser is presented. It is shown that it is possible to utilize a rotating six-sided scanning mirror and a fixed diffraction grating to rapidly switch wavelength over randomly selected lasing transitions in the 9-11 mu m region of the spectrum. The scanning mirror and an optical encoder ale driven by a hysteresis synchronous motor at a speed of 1500 rpm. A surface-wire-corona preionization was utilized in a cavity. The laser system is highly automated with microprocessor-controlled laser line selection. Single-branch emission at two wavelengths with time interval less than or equal to 10 ms has been obtained from a single cavity TEA CO2 laser. An accurate line selection has been demonstrated in over 40 transitions at a pulse repetition frequency of up to 100 Hz. The laser energy at first-order couple output was up to 20 mJ per pulse and the pulse width is about 60 ns in an active volume of 36 cm(3). (C) 2000 Elsevier Science B.V. All rights reserved. [References: 6]
机译：在这项研究中，针对使用差分吸收激光雷达（DIAL）测量污染物气体的浓度，提出了一种用于快速调谐横向激发大气压（TEA）CO2激光器的设备。结果表明，可以利用旋转的六面扫描镜和固定的衍射光栅在光谱的9-11微米范围内的随机选择的激光跃迁上快速切换波长。磁滞同步电动机以1500 rpm的速度驱动扫描镜和光学编码器。在腔中利用了表面线电晕预电离。激光系统是高度自动化的，具有微处理器控制的激光线选择功能。从单腔TEA CO2激光器获得了两个波长的时间间隔小于或等于10 ms的单分支发射。在高达100 Hz的脉冲重复频率下的40多个过渡中，已经证明了精确的线路选择。在36 cm（3）的有效体积中，一阶偶合输出的激光能量高达每脉冲20 mJ，脉冲宽度约为60 ns。 （C）2000 Elsevier Science B.V.保留所有权利。 [参考：6]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号