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    • 1. 发明授权
    • Narrow-band laser apparatus
    • 窄带激光装置
    • US6101211A
    • 2000-08-08
    • US945219
    • 1997-10-01
    • Osamu WakabayashiHiroshi KomoriHakaru Mizoguchi
    • Osamu WakabayashiHiroshi KomoriHakaru Mizoguchi
    • H01S3/1055H01S3/225H01S3/08
    • H01S3/225H01S3/1055
    • A narrow-band laser apparatus comprising a laser generating section having laser activity and capable of generating laser beam; bandwidth narrowing section which is provided on one end side of the laser generating section on the optical axis of the laser beam generated in the laser generating section to narrow the bandwidth of the laser beam by means of at least one angel-dispersion wavelength selection element, fold back the laser beam in the narrowed band and output the folded laser beam toward the laser generating section; beam folding section which is provided on the other end of the laser generating section on the optical axis of the laser beam generated in the laser generating section to fold back the input laser beam and reflect the folded laser beam into the laser generating section; and a laser beam branching unit which is provided between the laser generating section and the bandwidth narrowing section to permit part of the laser beam input from the laser generating section to pass therethrough into the bandwidth narrowing section while deflecting the remaining part of the laser beam and drawing out the same as an output beam. The laser apparatus is constructed so that the light which has passed straight through the laser beam branching unit is input into the bandwidth narrowing section, thereby stabilizing a resonance system to eliminate multiwavelength oscillation accompanying the vibration.
    • PCT No.PCT / JP96 / 00921 Sec。 371日期:1997年10月1日 102(e)1997年10月1日PCT PCT 1996年4月3日PCT公布。 第WO96 / 31929号公报 日期:1996年10月10日一种窄带激光装置,包括具有激光活动并能产生激光束的激光发生部分; 带宽窄化部,其在激光发生部生成的激光的光轴上设置在激光发生部的一端侧,通过至少一个角度分散型波长选择元件使激光束的带宽变窄, 折叠在窄带中的激光束并将折叠的激光束输出到激光产生部分; 光束折叠部分,其设置在激光产生部分的另一端上,在激光产生部分中产生的激光束的光轴上折回输入的激光束并将折叠的激光束反射到激光产生部分中; 以及激光束分支单元,其设置在激光产生部分和带宽窄化部分之间,以允许从激光产生部分输入的激光束的一部分通过其进入带宽窄化部分,同时偏转激光束的剩余部分, 绘出与输出光束相同的图像。 激光装置被构造成使直接穿过激光束分支单元的光被输入到带宽窄化部分中,从而稳定谐振系统以消除伴随振动的多波长振荡。
    • 3. 发明授权
    • Excimer laser apparatus
    • 准分子激光装置
    • US5373523A
    • 1994-12-13
    • US136448
    • 1993-10-14
    • Junichi FujimotoHakaru MizoguchiYoshiho AmadaOsamu Wakabayashi
    • Junichi FujimotoHakaru MizoguchiYoshiho AmadaOsamu Wakabayashi
    • H01S3/034H01S3/036H01S3/225H01S3/22
    • H01S3/0346H01S3/036H01S3/225
    • An excimer laser apparatus is provided with a compact high efficiency dust particle removal means which is capable of maintaining the windows clean with only a small volume of purging gas, and which prevents deterioration of aperture masks without having to increase the cavity length or risking the possibility of leakage from piping connections. The excimer laser apparatus uses, as dust particle removal means, filters (13a and 13b) made of metal or ceramic which is non-reactive with fluorine. A ground potential dust collector can be provided at a downstream side of a static dust particle remover, having an anode and a cathode, for collecting any dust particles which have passed through the static dust particle remover. In addition, clean laser medium gas can be introduced into subchambers (14a and 14b) through gas introducing passages (11a and 11b) provided in the walls of the housing (1) and then into the laser chamber (12) through labyrinths (8a and 8b) without disturbing the clean gas which stays near the internal surfaces of the windows (6a and 6b).
    • 准分子激光装置设置有紧凑的高效除尘装置,其能够仅利用少量清洗气体来保持窗户清洁,并且防止孔径掩模的劣化,而不必增加空腔长度或冒着可能性 从管道连接泄漏。 准分子激光装置使用与氟反应的金属或陶瓷制成的过滤器(13a,13b)作为除尘装置。 可以在具有阳极和阴极的静电除尘器的下游侧设置地电位集尘器,用于收集通过静电除尘器的任何灰尘颗粒。 此外,可以通过设置在壳体(1)的壁中的气体引入通道(11a和11b)将干净的激光介质气体引入到子室(14a和14b)中,然后通过迷宫(8a和8a)进入激光室 8b),而不干扰保持在窗口(6a和6b)的内表面附近的清洁气体。
    • 7. 发明授权
    • Excimer laser device
    • 准分子激光装置
    • US5642374A
    • 1997-06-24
    • US420132
    • 1995-04-10
    • Osamu WakabayashiHakaru Mizoguchi
    • Osamu WakabayashiHakaru Mizoguchi
    • H01S3/104H01S3/10H01S3/134H01S3/225H01S3/22H01S3/223
    • H01S3/134H01S3/225
    • Aimed at preventing a laser light beam profile from fluctuating, and by using the fact that there is a substantially proportional relation between the beam profile and the charging voltage as well as between the beam profile and the composition or the total pressure of the laser gases, an excimer laser device comprises a laser chamber containing laser gases which are excited by initiating an electric discharge in the laser chamber to output laser light, a beam profile detector for detecting a beam profile of the output laser light, and a controller for controlling a electric discharge voltage (excitation intensity) and composition or total pressure of the prescribed types of laser gases in such a way that the beam profile is shaped as desired based on detection results of the beam profile detector. An excimer laser feedback control circuit detects the output laser beam width and controls the beam width by controlling one or more of the laser voltage, composition of the laser gas, pressure or partial pressure of the laser gas, or feed rate of a laser gas. The laser gas may comprise a halogen, buffer, or rare gas.
    • 旨在防止激光束轮廓波动,并且通过使用光束轮廓和充电电压之间以及光束轮廓与激光气体的组成或总压力之间存在实质上成比例关系的事实, 准分子激光装置包括激光室,其包含通过在激光室中引发放电而激发的激光气体输出激光,用于检测输出激光的光束分布的光束分布检测器,以及用于控制电 放电电压(激发强度)和规定类型的激光气体的组成或总压力,使得根据光束轮廓检测器的检测结果,根据需要对光束轮廓进行成形。 准分子激光反馈控制电路通过控制激光电压,激光气体的组成,激光气体的压力或分压或激光气体的进给速率中的一个或多个来检测输出激光束宽度并控制光束宽度。 激光气体可以包括卤素,缓冲剂或稀有气体。