Hi there,
I need a device which can measure the fluctuations, in a light ray, with the speed of light.
I mean, I need to know if at second 10^-8 (ten to power minus 8) I have a fluctuation in a light ray. I'm not interested to compute the power of that ray. I'm just interested to know if at a given moment in time (very, very small) it was or not a fluctuation in the intensity of that ray.
Is this possible?
Thanks, Laura