Measuring Light Pulse Duration

Discussion in 'General Electronics Chat' started by PulseLED, Mar 15, 2014.

  1. PulseLED

    Thread Starter New Member

    Jan 24, 2014
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    0
    Hi,

    I'm trying to measure the duration of a light pulse in the μs range, I purchased a BPW34 photodiode for the task (is this the best choice?). In photovoltaic mode (used as a solar cell) it gives readings of about 10x longer duration then it should. Here I'm just connecting the scope to the diode and flashing the light on it.

    So, now I want to try use it in photoconductive mode to increase the response time, the diode itself has listed rise/fall times of 100ns which should be good enough. Supposedly I have to provide "reverse bias" to the diode. Can anyone help me design the circuit to measure the light pulse?
     
  2. ronv

    AAC Fanatic!

    Nov 12, 2008
    3,282
    1,236
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