i am using photodiode with opamp as a photoconducting method. I am getting output well but output contains pulses. I can't understand that why photodiode and amplifier is generating pulses. help me to solve this problem. i am attaching circuit and dso output herewith.
Either if the pulses are actually present in the photo current, only at the OP output (is it really a LM324?) or picked up by your oscilloscope ground clip somehow, they are apparently real.