• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied optics >Intracavity laser absorption measurements at ultrahigh spectral resolution
【24h】

Intracavity laser absorption measurements at ultrahigh spectral resolution

机译：超高光谱分辨率的腔内激光吸收测量

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

Intracavity laser absorption spectroscopy with ultrahigh sensitivity and enhanced spectral resolution is demonstrated. It entails use of an intracavity etalon that selects equally spaced modes of the cavity. These modes are reduced in intensity when they occur at spectral locations where absorption that is due to intracavity species also occurs. We obtained absorption spectra by tuning the etalon in small steps across its free spectral range, recording intracavity spectra at each step, and summing the result. The maximum resolution is determined by the width of the etalon peaks, which was similar to 0.01 cm(-1). When the finesse of the etalon is increased, the resolution equal to the width of a single laser mode can be achieved. With this technique, spectra at Doppler-free resolution such as that required for studies of high vibrational-overtone transitions of molecules in supersonic jets are possible. (C) 1997 Optical Society of America.
机译：腔内激光吸收光谱具有超高灵敏度和增强的光谱分辨率。它需要使用腔内标准具，该标准具选择等间距的模腔。当这些模式出现在由于腔内物质而引起吸收的光谱位置时，强度也会降低。我们通过在其自由光谱范围内小步校准标准具，在每个步骤记录腔内光谱，并对结果求和，从而获得吸收光谱。最大分辨率取决于标准具峰的宽度，该宽度与0.01 cm（-1）相似。当增加标准具的精细度时，可以实现等于单激光模式宽度的分辨率。利用这种技术，可以实现无多普勒分辨率的光谱，例如研究超音速喷射器中分子的高振动-泛音跃迁所需的光谱。 （C）1997年美国眼镜学会。

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