Optical Device
    11.
    发明申请
    Optical Device 审中-公开
    光学设备

    公开(公告)号:US20070253051A1

    公开(公告)日:2007-11-01

    申请号:US10572493

    申请日:2004-09-17

    IPC分类号: G02B26/08

    CPC分类号: G03B21/56 Y10T428/12694

    摘要: A conductive thin film has first and second surfaces and at least one opening extending through from the first surface to the second surface. At least on one of the first and second surfaces, first and second periodic surface patterns having different period lengths are provided. The period length of the second periodic surface pattern is substantially equal to an odd integral multiple of a half of the period length of the first periodic surface pattern. With this, surface plasmon polaritons excited by the first periodic surface pattern undergo odd-order Bragg reflection by the second periodic surface pattern. As a result, the intensity of the light falling on the first surface and transmitted to the second surface through the opening is increased with high efficiency.

    摘要翻译: 导电薄膜具有第一和第二表面以及从第一表面延伸到第二表面的至少一个开口。 至少在第一和第二表面中的一个上,提供具有不同周期长度的第一和第二周期性表面图案。 第二周期性表面图案的周期长度基本上等于第一周期性表面图案的周期长度的一半的奇数整数倍。 由此,由第一周期性表面图案激发的表面等离子体激元由第二周期性表面图案经历奇数阶布拉格反射。 结果,以高效率提高落在第一表面上并通过开口传递到第二表面的光的强度。