权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Study on ShortーPulsed UV Lasers Using New Longitudinal Excitation Techniques

采用新型纵向激励技术的短脉冲紫外激光器研究

基本信息

批准号：
63420036
负责人：
GOTO Toshio
金额：
$ 15.81万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (A)
财政年份：
1988
资助国家：
日本
起止时间：
1988 至 1990
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63420036/
关键词：
Automatic Preionization Longitudinal Excitation ShortーPulsed UV Laser N_2 Laser XeCl Excimer Laser Rectangular Cross Section Laser Laser Adsorption Method Metastable Atom 電子密度シュタルク幅法準安定原子密度高速紫外パルスレーザ自動予備電離方式窒素レーザ XeClエキシマレ

项目摘要

Purposes of This ProjectAlthough a shortーpulsed uv lasers with longitudinal excitation is compact in its size and good in its beam quality, its efficient preionization technique has not ever been developed and that laser has scarcely been studied. However we developed a new preionization technique and laser tube, and succeeded in obtaining N_2 laser and XeCl excimer laser actions. The purposes of this project are to perform systematic studies on devices and mechanisms of these pulsed uv lasers with longitudinal excitation and to investigate the possibility as practical lasers.Research Results(1) Laser devices (excitation circuit, laser tube, gas supply system, etc.) were designed and constructed. Behaviors of a N_2 laser and a XeCl excimer laser were examined in detail and the optimum conditions were determined.(2) The longitudinally excited N_2 laser with rectangular cross section was designed and the higher laser power was obtained in it than in that with circular cross section.(3) The excitation circuit of high repetition rate with a thyratron was assembled and the relatively stable laser performance was obtained up to 100 Hz.(4) The absorption measurement system using the cw ring dye laser was constructed and the temporal variation of the He metastable atom density was measured.(5) The performances of the longitudinally excited N_2 laser and XeCl excimer laser were examined, with combining the measured characteristics of the laser power and the voltage vs current with simulation analysis.(6) It was discussed if the N_2 and XeCl lasers with longtudinal excitation could be practical or not on the basis of the results (1) - (5).

项目目的纵波短脉冲紫外激光器虽然体积小，光束质量好，但其高效预电离技术尚未开发，对该激光器的研究也很少。然而，我们开发了一种新的预电离技术和激光管，并成功地获得了N_2激光和XeCl准分子激光作用。本项目的目的是对这些纵向激发脉冲紫外激光器的器件和机理进行系统的研究，并探讨其作为实用激光器的可能性。(1)设计并构建了激光器件（激励电路、激光管、供气系统等）。对N_2激光器和XeCl准分子激光器的行为进行了详细的研究，并确定了最佳条件。(2)设计了矩形截面的纵向激发N_2激光器，其激光功率高于圆形截面的激光器。(3)装配了具有闸流管的高重复频率激励电路，在100 Hz以内获得了相对稳定的激光性能。(4)构建了连续波环形染料激光器吸收测量系统，测量了He亚稳原子密度的时间变化。(5)结合实测的激光功率和电压电流特性，对纵向激发的N_2激光器和XeCl准分子激光器的性能进行了测试和仿真分析。(6)在(1)~(5)的基础上，讨论了纵向激励的N_2和XeCl激光器是否可行。