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    • 7. 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。