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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 64 (1993), S. 3289-3293 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: From the equivalent circuit of a photodiode it is shown that the light-induced current of the photodiode is expected to be characterized by a linear function of the light intensity in a range of eight decades. The electrical circuit of the detector based on a silicon photodiode (S1722-02; Hamamatsu) in combination with an operation amplifier used as a current-voltage converter and its realization is specified. It exhibits 10%–90% rise times between 200 ns and 5 μs depending on the internal amplification selected out of five stages. The wavelength dependence of the signal-to-noise ratio of this photodiode system is determined and compared with that of a detector based on a photomultiplier (1P28; RCA, Lancaster). At wavelengths above 580 nm the photodiode system exhibits a signal-to-noise ratio up to 20 times better than the photomultiplier system. Employing a HeNe laser as light source, a signal-to-noise ratio as high as 2×104 is found with a time resolution of 1 μs.
    Type of Medium: Electronic Resource
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