公开(公告)号：US4931704A

公开(公告)日：1990-06-05

申请号：US281679

申请日：1988-12-09

Applicant: Robert R. Alfano ,  Ardie D. Walser

Inventor： Robert R. Alfano ,  Ardie D. Walser

IPC: G01R13/34 ,  H01J43/08 ,  H01J43/30

CPC classification number: H01J43/30 ,  G01R13/34 ,  H01J43/08

Abstract: A femtosecond sampling oscilloscope includes a femtosecond laser for generating a pulse of light in the femtosecond range and a beam splitter for splitting the pulse of light into pulses traveling along first and second beam paths. A photoconductive switch disposed along the first beam path is used to produce an electrical stimulus output at a first output port, an electrical pulse output at a second output port and an optical output at a third output port. A photomultiplier tube having a strip line photocathode receives the pulse of light traveling along the first beam path. An input port is coupled to the photocathode. In use, the output signal at one of the output ports is connected to a test device producing a test voltage signal which is applied to the input port. When the test voltage signal and the light pulse traveling along the second path intersect on the photocathode in space and time, an electrical signal output is produced at the photomultiplier tube. The output is processed and/or stored in a computer and then, when desired, displayed on a cathode ray tube.

Abstract translation: 飞秒采样示波器包括用于产生飞秒范围内的脉冲的飞秒激光器，以及用于将光脉冲分成沿第一和第二光束路径行进的脉冲的分束器。 沿着第一光束路径设置的感光开关用于在第一输出端口处产生电刺激输出，在第二输出端口处产生电脉冲输出，在第三输出端口产生光输出。 具有带状光电阴极的光电倍增管接收沿着第一光束路径行进的光的脉冲。 输入端口耦合到光电阴极。 在使用中，其中一个输出端口处的输出信号连接到产生测试电压信号的测试设备，该测试电压信号被施加到输入端口。 当测试电压信号和沿着第二路径行进的光脉冲在空间和时间上在光电阴极上相交时，在光电倍增管处产生电信号输出。 将输出处理和/或存储在计算机中，然后在需要时显示在阴极射线管上。

公开(公告)号：US4853595A

公开(公告)日：1989-08-01

申请号：US91123

申请日：1987-08-31

Applicant: Robert R. Alfano ,  Ardie D. Walser

Inventor： Robert R. Alfano ,  Ardie D. Walser

IPC: G01N21/64 ,  H01J43/04 ,  H01J43/30

CPC classification number: H01J43/04 ,  G01N21/6408

Abstract: A photomultiplier tube which may be used in time resolving a luminiscence profile emitted from a sample with picosecond resolution using short (picosecond) electrical pulses as a probe and in time resolving an electrical pulse profile produced by fast electronic or optoelectronic devices with femtosecond resolution, using short (femtosecond) laser pulses as the probe is disclosed. The photomultiplier tube includes a photocathode for receiving light and producing emission of electrons in proportion to the intensity of the light, said photocathode having a transmission strip line configuration, accellerating means for accellerating electrons emitted by said photocathode, electron multiplication means for performing electron multiplication on the electrons emitted from the accellerating means, anode means for receiving electrons from the electron multiplication means and producing an analog electrical signal output, means for causing electrons emitted by the photocathode to move through the accellerating means and the electron multiplication means and then impinge on the anode means, and means connected to said photocathode for receiving an ultrafast voltage signal.

Abstract translation: 可以使用短（皮秒）电脉冲作为探针，并且用时间分辨由快速电子或光电子器件产生的电脉冲分布的时间分辨从样品发射的样品的亮度分布的光电倍增管，其使用飞秒分辨率，使用 作为探针的短（飞秒）激光脉冲被公开。 光电倍增管包括用于接收光并与光的强度成比例地产生电子的发射的光电阴极，所述光电阴极具有透射带线构造，用于对由所述光电阴极发射的电子进行加热的电流装置，用于对所述光电阴极进行电子倍增的电子倍增装置 从交流装置发射的电子，用于从电子倍增装置接收电子并产生模拟电信号输出的阳极装置，用于使由光电阴极发射的电子移动通过电荷装置和电子倍增装置，然后撞击在 阳极装置和连接到所述光电阴极的装置，用于接收超快电压信号。