Laser device and exposure device using the same

    公开(公告)号:US20040240489A1

    公开(公告)日:2004-12-02

    申请号:US10857547

    申请日:2004-06-01

    IPC分类号: H01S003/30

    摘要: In a laser module, a laser beam which is emitted from a laser element is focused by a condensing optical system and caused to enter an incidence end of an optical fiber. A laser device is provided with a plurality of these laser modules. Emission end portions of the optical fibers are bundled to form a laser emission portion. A thickness of cladding h of each optical fiber is set to a value calculated in accordance with the following equation: 1 cladding thickness null null null h null ( emission null null null light null null null amount of null null null one null null null laser null null null module null null null W required intensity null null null C null packing ratio null null null P - core diameter null null null t ) null 2 As a result, it is possible to emit a laser-beam with a high intensity that is required for functionality as a laser light source, for the purpose of raising resolution of an exposure apparatus.

    Method for adjusting alignment of laser beams in combined-laser-light source where the laser beams are incident on restricted area of light-emission end face of optical fiber
    2.
    发明申请
    Method for adjusting alignment of laser beams in combined-laser-light source where the laser beams are incident on restricted area of light-emission end face of optical fiber 有权
    用于调整组合激光光源中的激光束对准的方法,其中激光束入射在光纤的发光端面的限制区域

    公开(公告)号:US20040247240A1

    公开(公告)日:2004-12-09

    申请号:US10808587

    申请日:2004-03-25

    CPC分类号: G02B6/4206 G02B6/4226

    摘要: A combined-laser-light source includes: a plurality of semiconductor lasers; an optical fiber; and an optical system which converges a bundle of laser beams emitted from the plurality of semiconductor lasers, and makes the converged bundle of the laser beams enter the core of the optical fiber so that the laser beams are combined in the optical fiber when the laser beams pass through the optical fiber. The optical system is aligned with the optical fiber so that the converged bundle of the laser beams is incident on an area of an end face of the core when steady temperature control is performed on the combined-laser-light source, where the area is concentric with the end face of the core, and has a diameter equal to or smaller than half of the diameter of the core.

    摘要翻译: 组合激光光源包括:多个半导体激光器; 光纤; 以及会聚从多个半导体激光器发射的一束激光束的光学系统,并且使得激光束的会聚束进入光纤的核心,使得激光束在光纤中被组合在激光束 通过光纤。 光学系统与光纤对准,使得当对组合激光光源进行稳定的温度控制时,激光束的会聚束入射到芯的端面的区域,其中该区域是同心的 具有芯的端面,并且具有等于或小于芯的直径的一半的直径。