Laser-driven fusion etching process
    2.
    发明授权
    Laser-driven fusion etching process 失效
    激光驱动融合蚀刻工艺

    公开(公告)号:US4838989A

    公开(公告)日:1989-06-13

    申请号:US89206

    申请日:1987-08-25

    摘要: The surfaces of solid ionic substrates are etched by a radiation-driven chemical reaction. The process involves exposing an ionic substrate coated with a layer of a reactant material on its surface to radiation, e.g. a laser, to induce localized melting of the substrate which results in the occurrance of a fusion reaction between the substrate and coating material. The resultant reaction product and excess reactant salt are then removed from the surface of the substrate with a solvent which is relatively inert towards the substrate. The laser-driven chemical etching process is especially suitable for etching ionic salt substrates, e.g., a solid inorganic salt such as LiNbO.sub.3, such as used in electro-optical/acousto-optic devices. It is also suitable for applications wherein the etching process is required to produce an etched ionic substrate having a smooth surface morphology or when a very rapid etching rate is desired.

    摘要翻译: 通过辐射驱动的化学反应蚀刻固体离子基质的表面。 该方法包括将涂覆有反应物材料层的离子基质暴露于其表面上,例如辐射。 激光,以引起基板的局部熔化,这导致基板和涂层材料之间的聚变反应的发生。 然后将所得反应产物和过量的反应物盐用对基材相对惰性的溶剂从基材表面除去。 激光驱动的化学蚀刻工艺特别适用于蚀刻离子盐底物,例如LiNbO 3等固体无机盐,例如用在电光/声光器件中。 它也适用于其中需要蚀刻工艺以产生具有光滑表面形态的蚀刻离子基底或当需要非常快速的蚀刻速率时的应用。

    Laser-triggered vacuum switch
    3.
    发明授权
    Laser-triggered vacuum switch 失效
    激光触发真空开关

    公开(公告)号:US4978893A

    公开(公告)日:1990-12-18

    申请号:US249815

    申请日:1988-09-27

    IPC分类号: H01T2/00

    CPC分类号: H01T2/00

    摘要: A laser-triggered vacuum switch has a material such as a alkali metal halide on the cathode electrode for thermally activated field emission of electrons and ions upon interaction with a laser beam, the material being in contact with the cathode with a surface facing the discharge gap. The material is preferably a mixture of KCl and Ti powders. The laser may either shine directly on the material, preferably through a hole in the anode, or be directed to the material over a fiber optic cable.

    摘要翻译: 激光触发真空开关在阴极上具有诸如碱金属卤化物的材料,用于在与激光束相互作用时电子和离子的热激活场发射,该材料与阴极接触,其表面面向放电间隙 。 该材料优选为KCl和Ti粉末的混合物。 激光器可以直接照射在材料上,优选地通过阳极中的孔发光,或者通过光纤电缆被引导到材料上。