Discharge Pumped Rare-Gas Excimer Lasers in Vacuum Ultraviolet Spectral Region

真空紫外光谱区放电泵浦稀有气体准分子激光器

基本信息

  • 批准号:
    04805037
  • 负责人:
  • 金额:
    $ 1.22万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
  • 财政年份:
    1992
  • 资助国家:
    日本
  • 起止时间:
    1992 至 1993
  • 项目状态:
    已结题

项目摘要

Rare gas excimer lasers are atractive vacuum ultraviolet sources with high power tunable output around the center of their spectra. However, their oscillation have been obtained only by electron beam pumping. The electron beam pumped rare gas excimer lasers have difficulties for applications because of their low repitition operation. It, therefore, has been desired the rare gas excimers were considered to produce by three body collisions of an excited rare gas atom with two of ground state atoms. In this case a high pressure operation is favorable, because a formation rate of raer gas excimers is proportional to the square of the gas pressure. It is well known that uniform glow discharges in the high pressure gas are very difficult to establish. We have proposed a new concept of formation of the rare gas excimers in which the rare gas excimers were formed from rare gas clusters in an expanding jet discharge.In this project it has been experimentary confirmed that Xe excimers were forme … More d from the Xe clusters excited by discharge electrons. Distributions of sizes of the Xe clusters were measured with a TOF spectrometer by three photon ionization of the clusters. Densities of the Xe dimers were measured to be 10^<17>cm^<-3> at 3mm down stream of the expanding jet with 3atm.to 8atm.of staggnation pressures. Densities of Xe excimers were measured to be 10^9cm^<-3>, the densities of the clusters were 10^<17>cm^<-3> though. These very low efficiency of excimer formation from the clusters is considered to be unsuitable discharge conditions.In DC sischarges radiative transitions from the ^3SIGMA excimer state were predominant, stimulated emissions, therefore, were not observed because the stimulated emission cross section of ^3SIGMA state was three orders smaller than that of ^1SIGMA state. As a result it is considered that fast pulsed discharges should be essential for obtaining a high laser gain.It is very important to point out that an efficinet vacuum ultraviolet lamp can be produced using the excimer radiation by the ^3SIGMA transitions.In future electron energy dependences of the excitation cross sections of rare gas excimers from the clusters will be measured in order to conclude efficient discharge conditions. Less
稀有气体准分子激光器是一种在光谱中心附近具有高功率可调谐输出的真空紫外吸收光源。然而,它们的振荡仅通过电子束泵浦获得。电子束抽运的稀有气体准分子激光器由于重复率低,给实际应用带来困难。因此,人们一直希望稀有气体准分子被认为是通过激发的稀有气体原子与两个基态原子的三体碰撞产生的。在这种情况下,高压操作是有利的,因为稀有气体准分子的形成速率与气体压力的平方成比例。众所周知,在高压气体中很难建立均匀的辉光放电。我们提出了稀有气体准分子形成的新概念,其中稀有气体准分子是由稀有气体团簇在膨胀射流放电中形成的。在本项目中,实验证实了Xe准分子的形成。 ...更多信息 d来自放电电子激发的团簇。用飞行时间谱仪对团簇进行三光子电离,测量了团簇的尺寸分布。在<17><-3>膨胀射流下游3 mm处,3atm.to滞流压力下测得的二聚体密度为10 μ cm-1。测得的准分子密度为10^9cm^3<-3>,但团簇的密度为<17>10^cm <-3>^3。在直流放电条件下,从^3 SIGMA准分子态产生的辐射跃迁占主导地位,由于^3 SIGMA态的受激发射截面比^1 SIGMA态小三个数量级,因此没有观察到受激发射。因此,认为快速脉冲放电是获得高激光增益的必要条件,指出利用准分子辐射产生的^3 SIGMA跃迁可制成高效的真空紫外灯是非常重要的,今后将测量团簇中稀有气体准分子激发截面与电子能量的关系,以得出高效放电条件。少

项目成果

期刊论文数量(54)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
R.Matsumoto, M.Katto, M.Okuda, K.Kurosawa W.Sasaki Y.Takigawa: "Beam profile measurement on an argon excimer laser with imaging plates" The Rev.Laser Engineering. vol.20. 738-745 (1992)
R.Matsumoto、M.Katto、M.Okuda、K.Kurosawa W.Sasaki Y.Takikawa:“使用成像板在氩准分子激光器上进行光束轮廓测量”Rev.Laser Engineering。
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    0
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W.Sasaki: "Discharge-pumped rare gas excimer lasers" CLEO'92 1992 Technical Digest. 12. 112-113 (1992)
W.Sasaki:“放电泵浦稀有气体准分子激光器”CLEO92 1992 技术文摘。
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    0
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松園 清吾: "新しい希ガスエキシマ生成法による準連続誘導放出光の発生" 宮崎大学工学部研究報告. 38. 175-182 (1992)
Seigo Matsuzono:“通过新的惰性气体准分子产生方法产生准连续受激发射光”宫崎大学工程学院研究报告 38. 175-182 (1992)。
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    0
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小曽根 伸憲: "希ガスエキシマ生成断面積計測システムの検討" 宮崎大学工学部研究報告. 38. 79-86 (1993)
臭氧信则:《稀有气体准分子产生截面积测量系统的研究》宫崎大学工学部研究报告38. 79-86 (1993)。
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    0
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M.Ohmukai, H.Naito, M.Okuda, K.Kurosawa, W.Sasaki T.Matsushita Y.Tsunawaki, S.Nozawa & T.Igarashi: "Silicon precipitation induced by argon excimer laser in surface layrs of Si_3N_4" Jpn.J.Appl.Phys.vol.32, Part2, #8A. L1062-L1065 (1993)
M.Ohmukai、H.Naito、M.Okuda、K.Kurosawa、W.Sasaki T.Matsushita Y.Tsunawaki、S.Nozawa
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SASAKI Wataru其他文献

SASAKI Wataru的其他文献

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{{ truncateString('SASAKI Wataru', 18)}}的其他基金

Assessments of wave energy resources around Japan
日本各地波浪能资源评估
  • 批准号:
    25340131
  • 财政年份:
    2013
  • 资助金额:
    $ 1.22万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Happiness's universality and transcendence of the common good-Deployment of the human theory in Thomas Aquinas-
幸福的普遍性和对共同利益的超越——托马斯·阿奎那的人性理论的展开——
  • 批准号:
    19520037
  • 财政年份:
    2007
  • 资助金额:
    $ 1.22万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Ultrahigh peak power vacuum ultraviolet laser and its applications
超高峰值功率真空紫外激光器及其应用
  • 批准号:
    10044167
  • 财政年份:
    1998
  • 资助金额:
    $ 1.22万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B).
Generation of Broadband Tunable Coherent X-rays by Using Optical Field Induced Ionization
利用光场诱导电离产生宽带可调谐相干 X 射线
  • 批准号:
    09450033
  • 财政年份:
    1997
  • 资助金额:
    $ 1.22万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
VACUUM ULTRAVIOLET LASERS BY RARE GAS CLUSTERS EXCITATION
稀有气体团簇激发真空紫外激光器
  • 批准号:
    06452205
  • 财政年份:
    1994
  • 资助金额:
    $ 1.22万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
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