Dielectric dispersion determining method in terahertz region using
femtosecond ultrashort visible optical pulse
    2.
    发明授权
    Dielectric dispersion determining method in terahertz region using femtosecond ultrashort visible optical pulse 失效
    使用飞秒超短可见光脉冲在太赫兹区域中的介电色散测定方法

    公开(公告)号:US5946085A

    公开(公告)日:1999-08-31

    申请号:US37424

    申请日:1998-03-10

    CPC分类号: G01N21/41 G01N21/3581

    摘要: A dielectric dispersion determining method applying a transient grating method. The transient response of a sample is observed by the transient grating method using a femtosecond ultrashort visible optical pulse. A vibrational waveform b(t) is determined such that its square b(t).sup.2 replicates vibrational components observed in the transient response. The vibrational waveform b(t) is converted into b(.omega.) through the Fourier transform. The dielectric constant .epsilon.(.omega.) is obtained by substituting the converted value for b(.omega.)/.omega..sup.2 on the right-hand side of the following equation (1) derived from Maxwell's equations. The dielectric constant and/or refraction index can be directly obtained from the transient response to the femtosecond ultrashort visible optical pulse without passing through the dispersion relation which leaves some ambiguity in its definition. ##EQU1##

    摘要翻译: 一种应用瞬态光栅法的介质色散测定方法。 通过使用飞秒超短可见光脉冲的瞬态光栅法观察样品的瞬态响应。 确定振动波形b(t)使其平方b(t)2复制在瞬态响应中观察到的振动分量。 通过傅里叶变换将振动波形b(t)转换为b(ω)。 通过将从麦克斯韦方程导出的下式(1)的右侧的转换值代入b(ω)/ω2获得介电常数ε(ω)。 介电常数和/或折射率可以直接从对飞秒超短可见光脉冲的瞬态响应获得,而不会通过在其定义中留下一些歧义的色散关系。

    Ultra-minute microscope for spectroscopy
    3.
    发明授权
    Ultra-minute microscope for spectroscopy 有权
    超分子显微镜用于光谱学

    公开(公告)号:US6108094A

    公开(公告)日:2000-08-22

    申请号:US249138

    申请日:1999-02-12

    摘要: An ultra-minute microscope for spectroscopy includes a rod-shaped lens having an index of refraction distribution gradient and capable of having a sample mounted on one end surface thereof, an element for projecting a laser beam into the rod-shaped lens from another end surface thereof and converging it to a focal point at an interface region between the one end surface of the rod-shaped lens and the sample, and a scanner for varying the incidence angle of the laser beam to scan the focal point two-dimensionally on the one end surface.

    摘要翻译: 用于光谱学的超微量显微镜包括具有折射率分布梯度折射率的棒状透镜,并且能够将样品安装在其一个端面上,用于将激光束从另一端面投射到棒状透镜中的元件 并且将其会聚到棒状透镜的一个端面与样品之间的界面区域处的焦点,以及用于改变激光束的入射角以扫描焦点的扫描仪,二维扫描仪 端面。

    Clutch drum
    4.
    发明授权
    Clutch drum 失效
    离合器鼓

    公开(公告)号:US4716756A

    公开(公告)日:1988-01-05

    申请号:US935149

    申请日:1986-11-25

    CPC分类号: F16D13/62 F16D13/52

    摘要: A press-formed clutch drum of an automatic transmission of which inner and outer cylindrical surfaces are respectively formed with a first series of splines and a second series of inverted splines. The first and second series of splines are alternatively arranged in a ring so that each adjacent two splines are spaced by an interposal of a connecting portion defined therebetween. Each of the first and second series of splines comprises a pair of raised portions projected radially from the major cylindrical body of the drum, and a depressed portion interposed between the paired raised portions to form a groove in the major cylindrical body. The raised portions of the first and second series of splines are respectively projected inwardly and outwardly with respect to the center axis of the cylindrical body. The connecting portion extends between one of the paired raised portions of the first series of splines and adjacent one of the paired raised portions of the second series of splines and has a radial cross section which is inclined with respect to an imaginary plane which contains both the center axis of the major cylindrical body and the middle portion of the connecting portion in cross-section.

    摘要翻译: 一种自动变速器的压制式离合器鼓,其内圆柱面和外圆柱形表面分别形成有第一系列花键和第二系列倒车花键。 第一和第二系列花键交替地布置成环,使得每个相邻的两个花键通过在它们之间限定的连接部分的间隔而隔开。 第一和第二系列花键中的每一个包括从滚筒的主圆筒体径向突出的一对凸起部分和插入在一对凸起部分之间的凹陷部分,以在主圆筒体中形成凹槽。 第一和第二组花键的凸起部分分别相对于圆柱体的中心轴向向内和向外突出。 所述连接部分在所述第一系列花键的所述一对凸起部分中的一个之间延伸并且与所述第二组花键的所述一对凸起部分中的一个相邻,并且具有相对于假想平面倾斜的径向横截面,所述假想平面包含 主圆柱体的中心轴线和连接部分的中间部分的横截面。