• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Journal of Chemical Physics >Vacuum-ultraviolet frequency-modulation spectroscopy
【24h】

Vacuum-ultraviolet frequency-modulation spectroscopy

机译：真空 - 紫外线频率调制光谱

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

Frequency-modulation (FM) spectroscopy has been extended to the vacuum-ultraviolet (VUV) range of the electromagnetic spectrum. Coherent VUV laser radiation is produced by resonance-enhanced sum-frequency mixing (nu(VUV) = 2 nu(UV) + nu(2)) in Kr and Xe using two near-Fourier-transform-limited laser pulses of frequencies nu(UV) and nu(2). Sidebands generated in the output of the second laser (nu(2)) using an electro-optical modulator operating at the frequency nu(mod) are directly transferred to the VUV and used to record FM spectra. Demodulation is demonstrated both at nu(mod) and 2 nu(mod). The main advantages of the method compared to VUV absorption spectroscopy are its background-free nature, the fact is that its implementation using table-top laser equipment is straightforward and that it can be used to record VUV absorption spectra of cold samples in skimmed supersonic beams simultaneously with laser induced- fluorescence and photoionization spectra. To illustrate these advantages, we present VUV FM spectra of Ar, Kr, and N-2 in selected regions between 105 000 cm(-1) and 122 000 cm-(1). Published by AIP Publishing.
机译：频率调制（FM）光谱已经延伸到电磁谱的真空 - 紫外（VUV）范围。相干的VUV激光辐射通过共振增强的和频率混合（NU（VUV）= 2 NU（UV）+ NU（2））在KR和XE中使用两个近傅立叶变换限制有限的频率NU（紫外线）和nu（2）。使用在频率NU（MOD）上操作的电光调制器的第二激光调制器（NU（2））输出中产生的边带直接转移到VUV并用于记录FM光谱。在NU（MOD）和2 NU（MOD）上证明了解调。与Vuv吸收光谱相比该方法的主要优点是其背景下的自然，事实是，它使用台式激光设备的实现是简单的，并且它可用于记录脱脂超声波梁中的冷样品的Vuv吸收光谱同时具有激光诱导 - 荧光和光离光谱。为了说明这些优点，我们将Ar，Kr和N-2的VUV FM光谱呈现在105 000cm（-1）和122 000cm-（1）之间的选定区域中。通过AIP发布发布。

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