Hello everyone,
I'm going to get start with Arduino trying to realize a Photon Coincidence Box in my Quantum Optics Lab. Do you think this signal from two APDs can be noticed using Arduino 2? If it is really possible, can Arduino 2 read multiple signal of this type in short delay (or even better simultaneosly) between the two arms?
Thank you so much!
No. You will need pulse-stretching hardware, which may render the experiment pointless. The data sheet for the processor chip specifies the limitations of the inputs.
for 15 ns signal you need at least a 60Mhz processor to detect the pulse.
To count the pulse you need approx 10 instructions ==> 10x as high = 600 MHz
Do the math..
Are you trying to detect the arrival times of individual photos?
That isn't a job for Arduino.
slacky11:
Do you think this signal from two APDs can be noticed using Arduino 2?
What's an "APD"?
What sort of signals are you trying to read? How long and how close together?
There are plenty of devices with multiple processors. You could use individual processors to monitor a single signal line. This way multiple signals could be received simultaneously.
It seems that the OP has substantially changed the original post, making many of the responses confusing or meaningless.
The OP originally stated that pulses of length 15 ns were to be detected. There was no mention of an APD (avalanche photodiode).
This is a NO-NO!
jremington:
It seems that the OP has substantially changed the original post
I wondered where the 15ns figure came from. I had also wondered how you were able to read the datasheet when there did appear to be enough information to find it.
jremington:
This is a NO-NO!
Agreed! It's very aggravating when people do this.
Thanks for letting me know what happened.