Magnetic photonic crystal structure for providing spatial frequency asymmetry for light propagating in different directions

    公开(公告)号:US20060109530A1

    公开(公告)日:2006-05-25

    申请号:US11156042

    申请日:2005-06-17

    IPC分类号: G03H1/00

    CPC分类号: B82Y20/00 G02B6/1225

    摘要: A magnetic photonic crystal for providing asymmetry of spatial frequencies in the propagation of light is provided. The crystal is formed from at least two materials having different indices of refraction which are aligned along the longitudinal axis of the crystal. And arranged in an array whose symmetry does not include a spatial inversion operator such that (x,y)==/=(−x,−y). One or more of the materials forming the array is magnetic such that the magnetic group representation of the array does not include time inversion as a symmetric operator. In operation, when the magnetic material forming the material is magnetized, the group velocity property of light propagated in one direction along the axis of the array is different from the group velocity property of light transmitted in an opposite direction through the array. The magnetic photonic crystal may be used, for example, as an optical memory device or a high speed modulator/demodulator.

    Curved honeycomb article, EUV apparatus having a curved honeycomb article, and method of making a curved honeycomb article
    5.
    发明申请
    Curved honeycomb article, EUV apparatus having a curved honeycomb article, and method of making a curved honeycomb article 失效
    弯曲蜂窝体制品,具有弯曲蜂窝制品的EUV装置,以及制造弯曲蜂窝制品的方法

    公开(公告)号:US20050008818A1

    公开(公告)日:2005-01-13

    申请号:US10882011

    申请日:2004-06-30

    IPC分类号: G03F7/20 B32B3/12

    摘要: The present invention provides a curved honeycomb article having a first face, a second face, and a plurality of channels formed from the first face to the second face, each channel having a channel axis, the curved honeycomb article having a width of at least about 15 cm in at least one direction in the plane normal to a channel axis at its geometrical center, each channel having a virtual channel extension associated therewith, the virtual channel extensions defining a convergence area substantially smaller than the occluded area of the curved honeycomb article. Methods for making the curved honeycomb article and apparati using the curved honeycomb article are also disclosed.

    摘要翻译: 本发明提供了一种具有第一面,第二面和从第一面到第二面形成的多个通道的弯曲蜂窝制品,每个通道具有通道轴线,所述弯曲蜂窝制品的宽度至少约为 每个通道具有与其相关联的虚拟通道延伸的平面中的垂直于通道轴的平面中的至少一个方向上的15cm,虚拟通道延伸部限定了基本上小于弯曲蜂窝体的闭塞区域的会聚区域。 还公开了使用弯曲蜂窝制品制造弯曲蜂窝体制品和装置的方法。