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    • 51. 发明授权
    • Ultrafast sampling oscilloscope
    • 超快采样示波器
    • US4931704A
    • 1990-06-05
    • US281679
    • 1988-12-09
    • Robert R. AlfanoArdie D. Walser
    • Robert R. AlfanoArdie D. Walser
    • G01R13/34H01J43/08H01J43/30
    • H01J43/30G01R13/34H01J43/08
    • 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.
    • 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。