中大機構典藏-NCU Institutional Repository-提供博碩士論文、考古題、期刊論文、研究計畫等下載:Item 987654321/39206
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 67621/67621 (100%)
造访人次 : 23122209      在线人数 : 1001
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/39206


    题名: Vacuum ultraviolet 178.7 nm emission in sodium vapour under two-photon resonance excitation
    作者: Yih,TS;Pong,BJ;Cheng,WT;Chu,CC
    贡献者: 物理研究所
    关键词: HYPER-RAMAN EMISSION;HARMONIC-GENERATION;RARE-GASES;4-WAVE;SUPPRESSION;RADIATION
    日期: 1996
    上传时间: 2010-07-08 14:08:16 (UTC+8)
    出版者: 中央大學
    摘要: We have observed a fixed wavelength emission at 178.7 nm in sodium vapour under 578.7 nm two-photon resonance excitation. The proposed non-linear wave mixing scheme is described by omega(178.7 nm) = 2 omega(L) + omega(465.7 nm); where omega(178.7 nm) is the 178.7 nm photon frequency, omega(L) is the laser-photon frequency, and omega(465.7 nm) is the 465.7 nm photon frequency. This 465.7 nm emission comes from another six-wave mixing process involving two hyper-electronic Raman scattering photons. The excitation spectrum of the 178.7 nm emission has a typical multiwave mixing pattern with a competing effect appearing at higher temperatures under two-photon resonance excitation. Numerical analysis indicates that this vacuum ultraviolet emission has a poor phase-match condition that will depress the emission intensity to a certain extent. This makes the observation more difficult compared with other reported four-wave mixing generated emissions. Fortunately, on the one hand, it is enhanced by quasi-auto-ionization resonance when the 3s-5s transition is coupled to the sodium continuum by a 330.2 nm photon. On the other hand, its wavelength sits so close to the sodium Cooper minimum that weak absorption will not suppress this vacuum ultraviolet emission further.
    關聯: OPTICAL AND QUANTUM ELECTRONICS
    显示于类别:[物理研究所] 期刊論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    index.html0KbHTML352检视/开启


    在NCUIR中所有的数据项都受到原著作权保护.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈  - 隱私權政策聲明