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    Tunable photonic crystal
    2.
    发明申请
    Tunable photonic crystal 有权
    可调光子晶体

    公开(公告)号：US20070018077A1

    公开(公告)日：2007-01-25

    申请号：US11177847

    申请日：2005-07-08

    申请人： Irina Puscasu ,  Martin Pralle ,  James Daly ,  Mark McNeal ,  Edward Johnson

    发明人： Irina Puscasu ,  Martin Pralle ,  James Daly ,  Mark McNeal ,  Edward Johnson

    IPC分类号： H01J40/14

    CPC分类号： G01N21/255 ,  B82Y20/00 ,  B82Y30/00 ,  G01J1/42 ,  G01J3/108 ,  G01J5/20 ,  G01N21/3504 ,  H01L31/101

    摘要： An infrared emitter, which utilizes a photonic crystal (PC) structure to produce electromagnetic emissions with a narrow band of wavelengths, includes a semiconductor material layer, a dielectric material layer overlaying the semiconductor material layer, and a metallic material layer having an inner side overlaying the dielectric material layer. The semiconductor material layer is capable of being coupled to an energy source for introducing energy to the semiconductor material layer. An array of surface features are defined in the device in a periodic manner or quasi-periodic. The emitter device is adapted to emit electromagnetic energy having spectral characteristics determined by parameters of the periodically distributed surface features, the parameters including shape, size, depth, distribution geometry, periodicity, material properties and defects.

    摘要翻译： 利用光子晶体（PC）结构产生具有窄波长带的电磁发射的红外发射器包括半导体材料层，覆盖半导体材料层的介电材料层和具有内侧覆盖层的金属材料层 介电材料层。 半导体材料层能够耦合到能量源以将能量引入到半导体材料层。 表面特征的阵列以周期性或准周期性方式在器件中定义。 发射器件适于发射具有通过周期性分布的表面特征的参数确定的光谱特性的电磁能，参数包括形状，尺寸，深度，分布几何形状，周期性，材料性质和缺陷。

    Absorption spectroscopy apparatus and method
    3.
    发明申请
    Absorption spectroscopy apparatus and method 有权
    吸收光谱装置及方法

    公开(公告)号：US20060227327A1

    公开(公告)日：2006-10-12

    申请号：US11101913

    申请日：2005-04-08

    申请人： Mark McNeal ,  Peter Loges ,  Irina Puscasu ,  James Daly ,  Edward Johnson

    发明人： Mark McNeal ,  Peter Loges ,  Irina Puscasu ,  James Daly ,  Edward Johnson

    IPC分类号： G01N21/59 ,  G01N21/03

    CPC分类号： G01N21/031 ,  G01N21/3504

    摘要： An absorption spectroscopy apparatus including a sample cell having a central axis, and a side wall coaxially positioned about the axis. The side wall defines a generally circular cross-section of the cell as taken along a plane extending perpendicular to the axis, wherein the generally circular cross-section of the sample cell has an average radius. The side wall includes a plurality of light reflective segments arrayed about the axis, wherein each reflective segment has a cross-section taken along a plane extending perpendicular to the axis of the cell that is concave with respect to the axis. The concave cross-section of each segment has an average radius that is unequal to the average radius of the generally circular cross-section of the sample cell. Among other aspects and advantages, the apparatus of the present disclosure is able to use incoherent, non-collimated light sources while maintaining high optical throughput efficiencies.

    摘要翻译： 一种吸收光谱仪，包括具有中心轴的样品池和围绕轴线同轴定位的侧壁。 侧壁限定了沿着垂直于轴线延伸的平面截取的电池的大致圆形横截面，其中样品池的大致圆形横截面具有平均半径。 所述侧壁包括围绕所述轴线排列的多个光反射段，其中每个反射段具有垂直于所述单元轴线延伸的平面截取的横截面，该平面相对于所述轴线是凹的。 每个段的凹截面的平均半径不等于样品池的大致圆形横截面的平均半径。 除了其它方面和优点之外，本公开的装置能够使用非相干的非准直光源，同时保持高的光通量效率。