Method of sample valuation based on the measurement of photothermal
displacement
    1.
    发明授权
    Method of sample valuation based on the measurement of photothermal displacement 失效
    基于光热位移测量的样本估值方法

    公开(公告)号:US5619326A

    公开(公告)日:1997-04-08

    申请号:US409670

    申请日:1995-03-24

    CPC分类号: G01N21/171

    摘要: A sample evaluation method based on the measurement of photothermal displacement in which two exciting light beams and two measuring light beams are produced by a laser source, the exciting beams are rendered intensity modulation in opposite phase relationship by an acoustic-optic modulator and illuminated to different positions of a sample, the measuring beams are provided with different oscillation frequencies by acoustic-optic modulators and illuminated to the irradiation positions of the exciting beams correspondingly, the reflected lights of measuring beams from the sample are merged so as to interfere with each other, and the sample is evaluated based on the phase of the interference light. The method is capable of measuring the photothermal displacement accurately and stably without implementing intricate signal processings.

    摘要翻译: 基于通过激光源产生两个激发光束和两个测量光束的光热位移测量的样本评估方法,激发光束通过声光调制器呈相反相位关系的强度调制,并被照射到不同的 样品的位置,测量光束通过声光调制器被提供有不同的振荡频率,并相应地照射到激发光束的照射位置,来自样品的测量光束的反射光被合并以相互干扰, 并且基于干涉光的相位来评估样品。 该方法能够精确稳定地测量光热位移,而不需要执行复杂的信号处理。

    Apparatus and method for measuring semiconductor carrier lifetime
    3.
    发明授权
    Apparatus and method for measuring semiconductor carrier lifetime 有权
    测量半导体载体寿命的装置和方法

    公开(公告)号:US09279762B2

    公开(公告)日:2016-03-08

    申请号:US13500305

    申请日:2010-10-01

    摘要: In a semiconductor carrier lifetime measuring apparatus A1 of the present invention, at least two types of light having mutually different wavelengths are irradiated onto a semiconductor X to be measured, a predetermined measurement wave is irradiated onto the semiconductor X to be measured, a reflected wave of the measurement wave that has been reflected by the semiconductor X to be measured or a transmitted wave of the measurement wave that has transmitted through the semiconductor X to be measured is detected, and the carrier lifetime in the semiconductor X to be measured is obtained based on the detection results so as to minimize the error. Accordingly, the semiconductor carrier lifetime measuring apparatus A1 configured as described above can more accurately measure the carrier lifetime.

    摘要翻译: 在本发明的半导体载体寿命测量装置A1中,将具有相互不同波长的至少两种类型的光照射到要测量的半导体X上,将预定测量波照射到要测量的半导体X上,反射波 检测被测半导体X所反射的测量波,或检测通过半导体X的被测量的测定波的透过波,测定半导体X的载流子寿命, 检测结果,以最小化误差。 因此,如上所述构成的半导体载体寿命测定装置A1能够更准确地测定载流子寿命。

    APPARATUS AND METHOD FOR MEASURING SEMICONDUCTOR CARRIER LIFETIME
    4.
    发明申请
    APPARATUS AND METHOD FOR MEASURING SEMICONDUCTOR CARRIER LIFETIME 有权
    测量半导体载体寿命的装置和方法

    公开(公告)号:US20120203473A1

    公开(公告)日:2012-08-09

    申请号:US13500305

    申请日:2010-10-01

    IPC分类号: G06F19/00 G01N21/55

    摘要: In a semiconductor carrier lifetime measuring apparatus A1 of the present invention, at least two types of light having mutually different wavelengths are irradiated onto a semiconductor X to be measured, a predetermined measurement wave is irradiated onto the semiconductor X to be measured, a reflected wave of the measurement wave that has been reflected by the semiconductor X to be measured or a transmitted wave of the measurement wave that has transmitted through the semiconductor X to be measured is detected, and the carrier lifetime in the semiconductor X to be measured is obtained based on the detection results so as to minimize the error. Accordingly, the semiconductor carrier lifetime measuring apparatus A1 configured as described above can more accurately measure the carrier lifetime.

    摘要翻译: 在本发明的半导体载体寿命测量装置A1中,将具有相互不同波长的至少两种类型的光照射到要测量的半导体X上,将预定测量波照射到要测量的半导体X上,反射波 检测被测半导体X所反射的测量波,或检测通过半导体X的被测量的测定波的透过波,测定半导体X的载流子寿命, 检测结果,以最小化误差。 因此,如上所述构成的半导体载体寿命测定装置A1能够更准确地测定载流子寿命。

    Sample evaluating method by using thermal expansion displacement
    5.
    发明授权
    Sample evaluating method by using thermal expansion displacement 失效
    使用干涉技术评估样品的激光诱导热膨胀位移的样品评估方法

    公开(公告)号:US5298970A

    公开(公告)日:1994-03-29

    申请号:US955241

    申请日:1992-10-01

    摘要: When evaluating defects, etc. of a sample by measuring thermal expansion displacement on the surface of the sample, which is produced by irradiating thereto an excitation beam of which intensity is cyclically modulated, a measuring beam having the displacement frequency F.sub.1 is irradiated to the vibrating surface of the sample, and the reflection beam is interfered with a reference beam having the frequency F.sub.2. The beat wave signal E.sub.1 (Beat frequency F.sub.b =F.sub.1 -F.sub.2) is converted to a binary signal E.sub.2. Then, the sample is evaluated by signals which are obtained by giving a suitable processing to the binary signals. In addition, the optic axes alignment is eliminated by utilizing the excitation beam itself concurrently as measuring beam.

    摘要翻译: 当通过测量样品的表面上的热膨胀位移来评估样品的缺陷等时,其通过向其照射强度为周期性调制的激发光束而产生,将具有位移频率F1的测量光照射到振动 样品的表面,并且反射光束被干扰具有频率F2的参考光束。 拍频信号E1(拍频Fb = F1-F2)被转换为二进制信号E2。 然后,通过对二进制信号给出合适的处理而获得的信号来评估样本。 此外,通过将激发光束本身同时用作测量光束来消除光轴对准。

    Photothermal conversion measurement apparatus, photothermal conversion measurement method, and sample cell
    6.
    发明授权
    Photothermal conversion measurement apparatus, photothermal conversion measurement method, and sample cell 失效
    光热转换测量装置,光热转换测量方法和样品池

    公开(公告)号:US07522287B2

    公开(公告)日:2009-04-21

    申请号:US11350954

    申请日:2006-02-10

    IPC分类号: G01B11/02 G01N21/00 G01N1/10

    摘要: A liquid sample is irradiated with excitation light and measurement light, and a measurement position at which a traveling path of the measurement light passes through an excitation section of the excitation light in the sample is changed while the sample is being irradiated with the excitation light and the measurement light. Then, the phase change of the measurement light is measured for each measurement by optical interferometry on the basis of the measurement light after the measurement light passes through the sample. The measurement position is changed by, for example, scanning the excitation light, moving the sample, moving a lens that collects the excitation light in the sample so as to change the light-collecting position (focal position) in the sample, etc.

    摘要翻译: 用激发光和测量光照射液体样品,并且在样品被激发光照射的同时改变测量光的行进路径通过样品中的激发光的激发部分的测量位置,以及 测量灯。 然后,基于测量光通过样品后的测量光,通过光学干涉测量对每次测量测量测量光的相位变化。 通过例如扫描激发光,移动样品,移动收集样品中的激发光的透镜来改变测量位置,以便改变样品中的聚光位置(焦点位置)等。

    Photothermal conversion measuring instrument
    8.
    发明申请
    Photothermal conversion measuring instrument 审中-公开
    光热转换测量仪器

    公开(公告)号:US20080123099A1

    公开(公告)日:2008-05-29

    申请号:US11902279

    申请日:2007-09-20

    IPC分类号: G01B9/02 G01N21/00

    CPC分类号: G01N21/171 G01N21/031

    摘要: There is provided a photothermal conversion measuring instrument which can measure change in property caused by thermal effect in a sample with high sensitivity and high accuracy by a simple structure. The instrument includes a current control circuit for sequentially switching output light of a plurality of excitation light sources each outputting excitation light having a different wavelength band so that one of the output light is irradiated to the sample, a light detector for interfering measurement light transmitted through the sample with reference light and detecting the intensity of the interference light, and a signal processor for extracting the same cycle components as the switching cycle of the output light switched by the current control circuit from a signal of the interference light intensity obtained from the light detector and for obtaining a difference of signal values corresponding to each of the excitation light based on the extracted signals.

    摘要翻译: 提供了一种光热转换测量仪器,可以通过简单的结构,以高灵敏度和高精度测量样品中热效应引起的性能变化。 该仪器包括电流控制电路,用于顺序地切换多个激发光源的输出光,每个激发光源输出具有不同波长带的激发光,使得输出光中的一个照射到样本,用于干扰测量光的光检测器, 具有参考光的样本并检测干涉光的强度;以及信号处理器,用于从由光获得的干涉光强度的信号中提取与由电流控制电路切换的输出光的切换周期相同的周期分量 并且用于基于所提取的信号获得与每个激发光对应的信号值的差异。