I need to make a detector that can register rise times as small as 10 microseconds for display on an O-scope. I do not need sensitivity (the source is a CO2 laser - optically attenuated as needed). I do not need DC stability. I do not need linear gain. I am only interested in using this detector to verify the rise/fall time of the laser light. I have seen various op-amp transconductance amp circuits, but they would require an exotic op-amp to achieve the bandwidth. I am hoping that all the things I don't care about will allow the use of something simpler - like a single bipolar transitor?
Robert Scott Ypsilanti, Michigan