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    • 1. 发明授权
    • Apparatus and method for use in calibrating the time axis and intensity
linearity of a streak camera
    • 用于校准条纹相机的时间轴和强度线性度的装置和方法
    • US4435727A
    • 1984-03-06
    • US382803
    • 1982-05-27
    • Norman H. SchillerRobert R. Alfano
    • Norman H. SchillerRobert R. Alfano
    • G04F13/02H04N7/18
    • G04F13/026
    • Apparatus is disclosed for use in calibrating the time axis and intensity linearity of a streak camera or any optoelectronic device over any one of a number of different time scales. The apparatus includes a plurality of bundles of optical fibers mounted on a rotation wheel and a pulsed light source. Each bundle of optical fibers is made up of a plurality of optical fibers, each cut to a different length with the differences in length between the fibers in any one bundle being uniform and the differences in length of the fibers in one bundle being different from the differences in length of the fibers in each one of the other bundles. The fibers in each bundle are arranged so that one set of ends terminates in a common input plane and the other set of ends terminates in a common output plane. In using the apparatus, the rotation wheel is positioned so that a selected one of the bundles is located to receive the light pulse from the light source and transmit the light received into the slit of the streak camera. A light pulse entering the bundle from the input end emerges from the output end as a train of pulses of equal intensity, one from each fiber, separated in time from one another in accordance with the difference in lengths of the fibers. In an illustrative embodiment of the invention, the number of bundles of fibers on the rotation wheel is five, the number of fibers in each bundle is ten and the differences in length of the fibers in the different bundles are 1, 2, 4, 10 and 20 cm respectively. As a result, depending on which bundle is illuminated, ten pulses of equal intensity, each separated in time by 50, 100, 200, 500 and 100 picoseconds, respectively, are produced.
    • 公开了用于校准条纹相机或任何光电子器件在多个不同时间尺度上的时间轴和强度线性度的装置。 该装置包括安装在旋转轮和脉冲光源上的多束光纤束。 每根光纤束由多条光纤组成,每条光纤切割成不同的长度,任何一条光纤之间的长度差异是均匀的,并且一条光纤中的光纤的长度不同于 每根其他束中的纤维的长度差异。 每个束中的纤维被布置成使得一组端部终止于公共输入平面中,另一组端部终止于公共输出平面中。 在使用该装置时,旋转轮被定位成使得所选束中的所选束被定位成接收来自光源的光脉冲并将接收到的光传送到条纹相机的狭缝中。 从输入端进入束的光脉冲从输出端出现,作为相同强度的脉冲串,每根纤维之一,根据纤维的长度差在时间上彼此分开。 在本发明的说明性实施例中,旋转轮上的纤维束数量为5个,每个束中的纤维数量为10个,并且不同束中的纤维的长度差为1,2,4,10 和20厘米。 结果,根据哪个束照射,产生相同强度的10个脉冲,分别在时间上分别为50,100,200,500和100皮秒。
    • 2. 发明授权
    • Laser cavity having an adjustable optical path length extender
    • 激光腔具有可调节的光程长度延长器
    • US4969156A
    • 1990-11-06
    • US87777
    • 1987-08-21
    • Norman H. SchillerRobert R. Alfano
    • Norman H. SchillerRobert R. Alfano
    • H01S3/081H01S3/086H01S3/105
    • H01S3/081H01S3/086H01S3/105
    • A laser is disclosed which includes an optical path length extender for increasing the optical path length of the laser cavity. The path length extender, which is disposed inside the laser cavity itself, includes a set of three curved mirrors each having the same curvature. The three mirrors are spaced and angularly positioned such that light entering the path length extender is reflected back and forth about the three mirrors a defined number of times before exiting the path length extender. By rotating one or two of the mirrors the number of reflections within the set of mirrors can be changed. The laser cavity configuration is particularly useful in a pulse laser for increasing the optical path length of the cavity for the purpose of increasing the pulse to pulse separation of the emitted pulses, when such an increase is desired, but is not limited exclusively to pulse lasers.
    • 公开了一种激光器,其包括用于增加激光腔的光程长度的光程长度延长器。 设置在激光腔本身内的路径长度扩展器包括一组三个具有相同曲率的弯曲镜。 三个反射镜间隔开并成角度地定位,使得进入路径长度扩展器的光在离开路径长度扩展器之前在三个反射镜周围反复前后定义。 通过旋转一个或两个反射镜,镜子组内的反射数可以改变。 激光腔配置在用于增加腔的光程长度的脉冲激光器中是特别有用的,以便在需要这种增加时增加脉冲到脉冲的脉冲间隔,但不限于脉冲激光 。
    • 3. 发明授权
    • Compact temporal spectral photometer
    • 紧凑的时间光谱光度计
    • US4630925A
    • 1986-12-23
    • US437897
    • 1982-11-01
    • Norman H. SchillerRobert R. Alfano
    • Norman H. SchillerRobert R. Alfano
    • G01J1/42G01J3/00G01J3/02G01J3/04G01J3/06G01N21/64G01J3/30
    • G01N21/6408
    • A temporal spectral photometer for use in obtaining spectral and temporal information simultaneously of an ultrafast pulse of luminescent light emitted from a sample upon excitation thereof includes an excitation section and a detection section. The excitation section includes a picosecond laser for exciting the sample to emit luminescent light and imaging optics for imaging the emitted light. The detection section includes a pin hole slit through which light from the imaging optics is admitted, a streak camera tube, an optical system including a grating for forming an image of the pin hole slit on the photocathode of the streak camera tube and at the same time dispersing the light admitted through the pin hole slit into its component wavelengths, a micrometer assembly mechanically coupled to the grating for selectively changing the wavelength region of dispersed light impinging on the photocathode, a video camera, a camera lens system for imaging the output image formed on the phosphor screen of the streak camera tube onto the input end of the video camera, a digital temporal analyzer coupled to the output of the video camera for digitizing and analyzing image information from the video camera and a video monitor coupled to the output of the temporal analyzer for displaying the analyzed data.
    • 用于同时获得从样品发射的发光的超快脉冲的光谱和时间信息的时间光谱光度计包括激发部分和检测部分。 激发部分包括用于激发样品发射发光的皮秒激光器和用于成像发射光的成像光学元件。 检测部分包括一个针孔狭缝,来自成像光学元件的光通过该孔孔,条纹相机管,光学系统,包括用于在条形相机管的光电阴极上形成针孔狭缝的图像的光栅 将通过针孔狭缝进入的光的时间分散成其分量波长,将与光栅机械耦合的微米组件选择性地改变照射在光电阴极上的分散光的波长区域,摄像机,用于对输出图像成像的相机透镜系统 形成在条纹相机管的荧光屏上到摄像机的输入端,耦合到摄像机的输出的数字时间分析器,用于数字化和分析来自摄像机的图像信息,以及耦合到视频摄像机的输出的视频监视器 用于显示分析数据的时间分析器。
    • 4. 发明授权
    • Picosecond delay device
    • 皮秒延迟装置
    • US4438416A
    • 1984-03-20
    • US342486
    • 1982-01-25
    • Norman H. SchillerRobert R. Alfano
    • Norman H. SchillerRobert R. Alfano
    • H01P9/00
    • H01P9/00
    • An electrical device for use in delaying the time of arrival of an electrical signal with fixed increments of delay in the picosecond range and having a minimum delay time in picoseconds is disclosed. In one embodiment of the invention, the device comprises a plurality of small T shaped RF coaxial connectors fixedly coupled together in series with the connectors themselves serving as delay elements. One of the unconnected (open) ports of the connector at one end of the series is used as the entrance port for the device and the other unconnected ports of the connectors in the series are used as exit ports for the device. An electrical signal introduced into the device through the entrance port and then exiting through one of the exit ports is delayed according to the total path length travelled by the signal in passing from the entrance port to the particular exit port selected to be used as the exit port, each port in the path travelled by the signal from the entrance port to the exit port producing a time delay in the order of picoseconds, the exact number of picoseconds for a port depending on the specific type of connector employed. In another embodiment of the invention, a plurality of transmission lines having different lengths between about 10 to 100 mm etched on a printed circuit board are connected to individual double pole double throw switches which are coupled together in series, each transmission line causing a time delay of a signal passing through it of a different number of picoseconds.
    • 公开了一种电气装置,其用于将电信号的延迟时间以固定的延迟增量延迟到皮秒范围并具有皮秒的最小延迟时间。 在本发明的一个实施例中,该装置包括多个与成为延迟元件的连接器本身串联连接在一起的小型T形RF同轴连接器。 系列一端的连接器的未连接(开放)端口之一用作设备的入口,系列中连接器的其他未连接端口用作设备的出口。 通过入口端口引入设备然后通过一个出口导出的电信号根据信号从入口端口到特定出口端口所行进的总路径长度被延迟,该出口端口选择用作出口 端口,通过从入口端口到出口端口的信号行进的路径中的每个端口产生皮秒顺序的时间延迟,取决于所使用的连接器的特定类型,端口的精确皮秒数。 在本发明的另一实施例中,在印刷电路板上蚀刻的在大约10至100mm之间具有不同长度的多条传输线连接到串联耦合在一起的各个双极双掷开关,每条传输线导致时间延迟 的信号通过它不同数量的皮秒。
    • 6. 发明授权
    • Electro-optical system for detecting the presence of an object within a
predetermined detection system
    • 用于检测预定检测系统内物体的存在的电光系统
    • US5245177A
    • 1993-09-14
    • US782292
    • 1991-10-24
    • Norman H. Schiller
    • Norman H. Schiller
    • G01V8/20
    • G01V8/20
    • A system for detecting the presence of an object within a predetermined detection region. The system comprises a light source for producing a beam of light in the direction of the object to be detected and a pair of light detector units. The light detector units are angularly oriented so that their fields of view intersect to form a detection zone, the portion of the detection zone illuminated by the light beam defining a detection region. The outputs from said light detector units are coupled to an AND gate which, upon simultaneous receipt of output signals from both light detector units, emits a detection signal. If the object is disposed within the detection region and is illuminated by the light source, both light detector units will simultaneously emit an output signal, thereby causing the AND gate to emit a detection signal. In contrast, if the object is disposed outside of the detection region and/or is not illuminated by the light source, only one or none of the light detector units will emit an output signal and the AND gate will not emit a detection signal.
    • 一种用于检测预定检测区域内物体的存在的系统。 该系统包括用于在待检测物体的方向上产生光束的光源和一对光检测器单元。 光检测器单元被成角度地定向,使得它们的视野相交以形成检测区域,检测区域由光束照射的部分限定检测区域。 来自所述光检测器单元的输出耦合到与门,当与两个光检测器单元同时接收到输出信号时,它们发出检测信号。 如果物体设置在检测区域内并被光源照射,则两个光检测器单元将同时发出输出信号,从而使与门发出检测信号。 相反,如果物体设置在检测区域的外部和/或不被光源照射,则只有一个或者没有一个光检测器单元将发出输出信号,并且与门将不发出检测信号。