Attached is a circuit with a photo-detector on which a pulsed light (from a laser) is falling. In addition a continuous wave light from a laser is also added which is also falling on the photo-detector simultaneously. The photo-detector is a fast detector and I can easily see the pulsed and the dc current in a scope.
Now what I want to do is the following:
I want to separate and record the pulsed response without doing anything to the load resistor (R_load) in the attached circuit, i.e the total load in the circuit cannot be altered.
I am probably wrong, but a capacitor if used in parallel keeping the total impedance same as R_load would work. The pulse signal could be read across the capacitor? If not, please advice.
Now what I want to do is the following:
I want to separate and record the pulsed response without doing anything to the load resistor (R_load) in the attached circuit, i.e the total load in the circuit cannot be altered.
I am probably wrong, but a capacitor if used in parallel keeping the total impedance same as R_load would work. The pulse signal could be read across the capacitor? If not, please advice.
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